I have a set of Sparco Fighter fixed seats and they hold me pretty well. I have nothing in the rear to access so don't need a reclining seat
If I needed to get in the back for something on a regular basis, I would consider a recliner.
How is the roll bar side bars fitting with your seats ?
Any luck with the clearance ?
I'll post some pics of the Sparcos as soon as I can find them.
Another option is using a fixed seat, and building a tilting mechanism out of welded square stock.
Sandeep