'69 Valiant 4-door w/bench seats - cramped at 5' 10"?

you might try bucket seats ...they are easier to move forward or back by the location you drill. Plus buckets sit lower than a bench.

I proved that with my 68 dart because I went from bench to buckets and its noticeably lower.

I have the opposite problem as you because I am 4'9" and a small person so I have had to do pedal extensions and stay with a bench which sits up a little higher and gives more view over the dash for shorter peeps.

I don't think I'll gain anything by sitting lower - if anything, it'll put my forearms even higher up on the wheel than they are now. Farther back is where I'd like to be.

Regardless, I'll have to crawl under the car and see if it has provisions for buckets around the driveshaft tunnel - I don't recall seeing any.

-Kurt