I'm running a '70E. The basic design of the car sets the driver low. With the seat set up correctly, the wheel and pedals seem to work fine however. Mine originally had the OE high back buckets. When I got the car they had new foam and covers. Height was OK but I found them to be lacking in both lateral support and back support.

I installed a set of Scat "Ralley" buckets (Summit). Scat makes a mounting bracket specifically for the E which has 3 mounting height settings. I used the lowest setting to get the driving position - especially the seat height to steering wheel relationship - I wanted.