Just wanted to provide a brief update on my experience with installing Miata Seats in my '72 240z. I ended up fabricating custom mounts and did not use the slider rails. Check my blog out for pictures:

Dave's 1972 Datsun 240z: Miata Seats Installed

What model year Miata are your seats from? Mid 90's?

They call them "NA", which is the first body style fro the early to mid 90's. Any should work, but these early ones, in my opinion, are the most comfortable!

On 4/8/2014 at 8:09 AM, Sean240Z said:

I decided on seats from the Honda S2000 and I love them. My install details are here:

http://www.classiczcars.com/forums/interior-s30/48744-s2000-seat-swap-240z.html

No longer there, can you repost?

do those have the built in speakers?

Sent from my LG-D850 using Classic Zcar Club mobile

On 12/6/2016 at 9:05 PM, Stike said:

No longer there, can you repost?

Just do a search and you'll find it.  Here's the link I found after searching.