[Newbie now owner, question on sunroof leaks]

Newbie now owner, question on sunroof leaks.  Me too!  I will need to fix my sunroof as well, leaks pretty bad.  The last owner gave me a box of parts and some include cables and gears for the sunroof. I will keep this in my archive for future reference.

[3 point seat belt attaching points]

My 1972 Avanti II has a dire need to get new seat belts.  It presently has front retractable lap belts but the buckles are very worn or broken. The previous owner gave me NOS Studebaker lap belts that don't retract.  I am looking at options for a 3 point seat belt system.  I have 2 bolts on the vertical part of the roll bar just behind the door, will the high point work on those to secure the belt?  I haven't seen any good pics of an install.  Does anyone have a horror story about the floor mounts?  Mine seem to be a bit rusty and before I torque on them I want to know what to expect.

[Tire sizes]

Gunslinger, thanks.  I am looking at BF Goodrich TA raised white letter radials

[Tire sizes]

I will be looking for tires for my 72, the tires on right now are about 20 years old from the last owner.  Presently the size is 215/70/15.  How wide can I go in the rear and front?  I have Magnum 500 wheels.