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Hi, Paul, My P.B. booster has the following measurements: On back (bolts to firewall bracket): 94mm CtoC horizontally, both top & bottom On back (bolts to firewall bracket): 89mm CtoC vertically, both sides So, the rear bolt pattern is a perfect rectangle, with 90 deg. corners. On front (attaches to M.C.): 82.5mm CtoC horizontally, both top & bottom On front (attaches to M.C.): 45mm CtoC vertically, both sides The front bolt pattern is also a perfect rectangle, with 90 deg corners. Hopefully, this isn't clear as mud. Let me know if it is. Also, you may need a new check valve. The one I bought is on ebay and is made for Studebaker's Bendix P.B. booster by Fusick. $28.50 + shpg. Regards, --Dwight

I hope to get my air dam installed today and post a photo. Mike

If protection of the radiator is all that's desired, just put a wire mesh on the actual radiator surface. But me personally to get down near the ground to see a grill is sorta senseless, (my opinion). An airfoil is a little different.. It can be seen standing up.

BTW… Only my opinion, but I feel ‘round light’ Stude Avantis look more ‘aggressive’ with the scoop area left open! (grille less) ‘Square light’ Stude Avantis look, to me, more normal if the factory grille is in place.

I agree. More about protection than look.

No grease fittings needed here.

The quick steering arms are only worthwhile on cars with the forklift steering box…somewhere in the 1977 time period. On cars prior to that the quick steering arms are not worth it. I put them on the ‘70 Avanti I had and the handling was not improved. My description was that the car’s steering became “darty”.

Some like the ‘look’ of the factory stainless steel grille on these cars…. To me, its real importance is radiator core protection.

So who is getting down on the ground to view a grill?

I believe that SI sells both types.

From what I was told, the schedule was determined by the availability of hotels/rooms. There are many events in that area and most hotels were already booked for 2026.

Grant Got my new 7/8” front bar mounted. I didn’t have enough room to slide the bar over far enough to get the other side in, but I didn’t have any trouble raising the bracket up. Held the end bolts with a needle nose vice grip. Hardest part was getting the new brackets bent into shape so the holes would line up. is there a final verdict in swapping for the shorter steering arms? People happy with the results? Mike

Maybe I could find a used rusty one and paint it black.

Monday through Wednesday? Why is this during the week? Seems like max participation would occur over a Saturday.

Palm Springs California, April 6-8, 2026. Attached are images of the registration form and the schedule of events. This information will be on the AOAI website soon and the next issue of the magazine BUT please know that this information was available at the Washington Penn 2025 meet and dozens of owners started signing up then.

Avanti II grilles are different than Studrbaker Avantis. My 78 has provisions for the extended bumper.

SI has them in reproduction

I haven’t checked but I’m guessing factory grilles are pretty scarce?

That site ( theavanti dot com) was owned by a Richard Gallatin, who passed a few years back. It's a sure bet that AOAI now has the contents/control of the site. Gallatin was a wizard at the web stuff, but SIO has a lot more car info.

I have lots of the parts from Jim in this engine build

Youse got it!!

That’s it exactly!

I did one Avanti that someone installed a 62 Lark grille directly in front of the radiator. It bolted to the core support, and was basically flush right in front of the radiator and offered good protection.

3) 1949 Commander