Looks sweet

 

isn't the 8.9.1 a little on the low side? I was debating between the 8.9.1 pistons and the 9.5.1

I would think the former would be a dog and 9.5.1 would more than suffice on pump?

 

I debated between the two and tried to due as much research as possible before the decision was made. There are many threads on here where this has been debated. In the end, both CRs can work very well for a give set up as long as the tune is good . Ultimately I went with with what Jayson/Wadzii my engine builder suggested which was 8.9. I don't feel the half a point would be that noticable in a car pushing that much boost 15psi++ especially with the early spool of the 3076r. Plus the half a point will give me a little more room to protect against detonation so for me it was worth the trade off.