Bucket seat track relocation brackets, for more leg room
 

Anybody ever install the "seat extensions" that push the seat back a couple of inches? My son is over 6'4" and very leggy. I can see when he's driving that he's pretty tight in there. I'm 6'2" and have never felt cramped. But I thought that I would at least explore the option for the poor kid.
If it's some cheap crap or if it affects the integrity of the seat and everything, then I don't want anything to do with it. But if it does work , let me know.

I added the driver's side extension on my 70 GTO. Required a bit of bending to match the correct contours. There is an instructional guide online somewhere. Maybe 400 4 spd will chime in, since his guys did the actual fitment/manipulation, but it came out great. I really needed any extra space I could get, being 6'4" also. Wasn't cramped with stock setup, but wasn't comfortable either.

I've got them from year one. Not sure how I survived without them. I'm 6'7" and it helped a lot, but I would take a couple more inches!

I installed them in our 69 Firebird with a bench seat, very pleased with the quality and integrity.

Tim john---

I made some of my own and installed them to give me about 1.5" more room. Did not affects the integrity of the seat whatsoever. I basically just did a copy of these. https://store.restoreamusclecar.com/...-4-pieces.aspx

After reading this thread I'm going to make myself a set. For some reason my 60 year old 6'4" body doesn't fit as well in the GTO as my 19 year old 6'4" body did :)

Yep, I've said the same except 17 vs 47;)

In almost all the cars I've had (since 1956) I've moved the front seat back by drilling new holes in the floorpan. [But I've always been into old machines; nothing newer than sixties]

Same except 15 and 57!

I got another set for our GTO. Can't believe how little leg room these cars have.

I added a set of the extenders to the drivers seat of my 67 GTO. I’m 6’2” and it makes a world of difference

Playing around with seating positions in different cars, I found I could move seats forward some after tilting the entire seat backwards a little. Your knees are more bent, makes a big difference. And tilting lowers your head slightly as well. Feels less like sitting ON a seat, and more like IN the seat. Without a tilt column that probably ain't happening, good thing your 67 is nicely equipped. Try a stack of washers under the front of one seat and see? Could even combine that with seat extenders if it works. HTH