Dalamar said:you can unbolt the seat from the track, drill new holes about 1" back & reattach.
that was the first mod I ever did (I'm 6' - 6")
more than that and you'd need an extender.
Justang said:I replaced my power tracks with manual ones from a fox (not sure if that makes a difference) I had to drill two holes I think to make everything line up but it is definitely lower. I can measure it for you if you really want to know.
Steven said:You could always cut the car in half and just put about a 3" extra section to the floor pan and rockers and pillars. But I think these other options work better.