ball bearing upgrade? or no?
 

I recently put up a thread about putting a 20b tt into my 8, then i kinda got turned off about it after finding out how much fab would have to go into it so i came across this kit here http://www.turbo-kits.com/rx-8_turbo_kits.html im looking to get the kit on top, the SFR, and whether or not is would be wise to get the ball bearing upgrade. tell me what you guys think, thanks.

looks like it is slow to spool up so the bb option would be worthwhile to help with that .

I notice they use the Powermod to control it . I have used this and I have to say it is not great if you want to push the renesis to a good power level . OK for low boost though

OP, again, I believe you need to do more research.

You can get a greddy kit with upgraded turbo and an AP for less than that SFR kit

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There is the perfect kit for sale right now in the fs section from turborx8