I installed these on a 90 Mustang. I am 6'3". I thought they would be great, but they actually made the seat height about 1/2 inch higher and without tilt, they make the ergonomics wrong. I took them back out.
I am 6'5" and puchased a 2000 Roush Stage 2 based on the fact that these would work. They are incredible. Easy installation and moves the seat all the way back to the rear seats. I even had to move them forward a tad. Completely changed the car for me and I am no longer a sardine. One caveat - if you are real tall you probably have long arms which you will need for the shifter. Not a problem just an observation. CJ sent these quickly and easily. Happy Camper!!
They were easy to install and did move the seat back so my legs were not all cramped up but it put my head in the roof, I took them back out and I am 6ft.2in. tall, friend of mine is 5ft.6in tried the seat and said it was perfect for him. CJpony sent them quickly no problem there..