64StudebakerAvanti

Not sure for Avanti IIs, but check that engine and transmission mounts are in the correct holes. For Studes, there are 2 sets, 1 for LHD and the other for RHD.

How about driveline angles? I had a similar issue with a 64 4spd and it was due to the spacers missing. here is discussion: https://4xshaft.com/blogs/general-tech-info-articles/driveshaft-angles?srsltid=AfmBOor0wf1cMqW-8ZB44Bme-ZMX7e3iMTewwuTZlsJauargt1YjTgVj

I have heard that non-Studebaker Avantis were shimmed higher to remove the rake. The rubber shims are between the frame and body. Maybe not needed on non-Studebaker cars as they sit up higher.

Wow Zedman, a lot of shims. I have removed bodies from 3 Stude Avantis and have experienced a lot fewer shims. Basically, the steel shims I have encountered are 1/8" and 1/4". Maybe total of 1/2" inch at cowl. The hogs had at most 1/4". You do not seem to have the rubber shims that insulated the mufflers. They are located just where the exhaust pipes come in at front and where they exit at the rear of the x member.

Hagerty claims their values are based on sales data and automotive expertise. 70% of the sales data is peer to peer, 20% from auctions and 10% from dealers. Like any guide, it is a starting point. Another source is Collector Car Market Review. Their values are generally lower, but their #1 condition is roughly the same as Hagerty's #2.

There are steel shims at the cowl, rear towers, and tubular cross member under the spare tire well (fiberglass to frame) as well as at the outrigger points for the hog troughs and radiator support. The 4 rubber shims on either side of the X member and the rubber shim over the shock mounts are not bolted to the frame. There are also two rubber seals under the seat belt frame mounting points. I just reused the shims that I removed with the exception of the seals under the seat belt mounting points. They are rubber doughnut shaped and attached to a metal plate. I made new ones from a sheet of self adhesive rubber. The rubber goes on the body side. Attaching a Pic of X member before blasting and painting frame.

Wow! Just checked for replacement Sumitomo cylinders. They are running over $250 each from parts geek. Over $1,000 for 4. Sleeving your existing cylinders or purchasing the Cobalt replacement seems to be a good idea.

I forgot about the rubber shim in the middle of the rear cross member just over the differential.

On an Avanti, the body to frame shims are steel. The only rubber ones are just over each muffler on either side of the X member. There should be 4 rubber shims. I am guessing that was to keep the floor pan away from the hot exhaust. I had the body on a rotisserie. I cleaned off the old undercoat and resprayed it with 3M rubberized undercoat.undercoating.

The posted prices are for 2002 Avanti convertible.

If you can get $50k, you should sell:

They do list Avanti with R3 engine with and without 4spd

Why not use Hagerty's valuation tool as a guide?

How about Matthew Burnette or Bo Markham? I know they sell parts. Matt is active on the SDC forum and seems to be repairing/rebuilding Studes.

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