Here is what I have in the parts box, no idea the kit source.
#18 - AMT '49 Ford
#19 -
#20 - Monogram '55 Chevy 1/24 scale
#21 - AMT '53 Studebaker
#22 -
#23 -
One of my favorite racing seats is from Revell, included in thier 60s era racing Corvette kit as well as the Shelby GT350R. It is more of a road racing in lieu of a drag racing seat.
However It can be reshaped to reduce the side bolstering like I have done here.
Some have the helmet bubble in the roof some versions don't. There are other minor variations, wheel types, fender flares, etc. but basically the same.
With bubble:
Without:
The most challenging part is separating the rear window from the 1-piece glass without breaking the rest of it. I'll give it some thought Thomas - thanks for the link.