Recaro Sports installed -
The main trick is keeping the seats low as possible. These seats are larger than the original ones (with tons more support). I have a pump up lumbar support on the left hand lower side of both seats, tons of shoulder support, your butt sits much firmer in the seat as well as your side. Much more of a drivers seat to go with the Momo steering wheel, which has a fantastic feel and thickness (if you have not thought about a thicker steering wheel it makes a HUGE difference). Both great improvements for driving. I'm sure I'll miss the looks of the iconic Datsun seats - as some point I may put them back in (but I doubt it).
Wedge Engineering made the install easy - their brackets are adjustable for height if needed.