Hey Luke, Have you read Tino's build thread?
I would also be inclined to speak with Michael South if you want a big power ej255/257 with reliability.
MSR
Ignore 50% of the American Internet info you read and throw the other 50% away......
A 2.5L offers much better off-boost drivability. The top end power remains the same between the 2.0 & 2.5.