what would be the best choice for springs suspension tech or racing beat??and then how about a sway bar....the thickest one who has it???

 

RB is a little firmer, but not harsh by any means. Suspension Techniques are progressive rate (I think?), which means that they ride different as the suspension is being worked from soft to hard. The thickest sway bars are going to be found at a race shop. Maybe G-Force Engineering or ISC racing? Both places specialize in RX-7s and both seem to know their **** about suspension. I really wanna get me a set of adjustable rear perches w/ race springs from ISC, but not before I fix the real problems first. Best of luck with your decision! HTH,

Zac