Looks like a similar setup to what I run. I used the 10:1 pistons but cut the head down more to get 11:1 CR. I run a c30-70 with the 88mm pulley amd ATI damper. If you run the stock crank pulley (think 949 is same diameter) boost will be less and more forgiving. I don't have any issues with belts (4rib). If you want to spin it faster go after the bigger crank. The 4 rib works good with the bigger 88mm rotrex pulley.

Not sure 91 will be ok with that though. It's really crap! I honestly think it needs race gas or E85.

I run run the 6 speed with a 4:10. Real happy with that setup ratio wise. We don't have big tracks around here.

Good cooling is a must. Again E85 helps here.

Posting here as a satisfied buyer, thanks for the fast shipping!

Great communication and a real stand up guy. I bought an FM2 turbo kit from him.

https://www.miataturbo.net/miata-par...-gt2560-89604/

Cheers bud! Thanks!

Since I can't seem to leave feedback, I'll put it here...

Really nice guy, bought my bushing kit (https://www.miataturbo.net/miata-par...ushings-88716/)

Fast payment, good times!