Hey sarstud,
Looks like you got the suspension and tranny mods. I meant your engine bay looks pretty stock to me.... ofcourse I'm comparing it to my brother's ride. In the future, you can look into aftermarket Intercooler, pipings, air filters, radiator, single turbo conversion.... there's alot you can do to an RX7.
But first I would make sure it's running good... check out this site...
http://www.scuderiaciriani.com/rx7/reliability.html you don't want to have a blown engine... rotary engines need lots of TLC.
By the way, I would consider getting a Turbo Timer.. and change that air separator tank to a metal one, they're known to crack and dump all your coolant.
I'm not an RX7 expert yet... but I've been helping my bro with his '93 and his is definitely not stock.
Have fun with your ride.