No one has mentioned the bump-steer problem that has yet to be fixed with the 3-rotor conversion. I remember hearing that the FC steering rack can be used to correct for it ... but is that really a "fix"? Either way, if you absolutely *must* spend $30K+ on your RX-7, then by all means, go ahead. But for that much money, why not buy a used Z06 and do heads/cam/port&polish? And then laugh when someone says 550HP ....

 

Bump steer has been "solved" on the pettit system by the means of the modified spindles. Yet, this only handles to the "mythical" 140 mph mark. It has been indicated by a few 20b Pettit owners that after that mark it becomes noticable.

MVA's system (indicated as other in my price list example) doesn't modify the steering rack; therefore doesn't cause the bump steer. I would recomend people to check out the 20b forum.

Mike