I also have a '65 that I'm modifying, I looked at the newer Tahoe/Yukon/etc. seats. They look like they'd work great but the one thing I can see that might be a problem is the seats are so tall that it pretty much makes the recline option useless since it would be sitting up against the rear window. The only way I can see it working is if you move the seat closer to the steering wheel, but then I'd end up with my knees in the dash. They do look good though. I'm going back with my original seat in the original material.
Lee