grannyknot

You'll be very pleased, very comfortable.  As I remember I had to cut off the locating pins on the bottom of the 350z seats then welded on 2 steel straps that aligned with the stock seat sliders and drilled holes to match and bolted them together.  Make sure when you mark the straps for drilling that the seat can slide back as far as possible, whish I could be of more help but it was 6 yrs ago and I don't have access to the car right now to check.

There are some pics starting at #256 on this thread, https://www.classiczcars.com/forums/topic/50240-thinking-about-installing-an-bmw-m6-engine-in-my-z/?&page=11#comments

Not much in the way of detail I'm afraid.

Chris