M20 ACL Race Main Bearing Set Version:Late Model Our Super Sport head comes

Our Super Sport head comes standard with new Supertech stainless steel black nitride valves

With rocker arm locks

These are the same pistons we use in-house for our stock M20B25 engine builds and SpecE30 engine builds

we may offer a reduced core charge refund

New rocker arm hardware

M20 ACL Race Main Bearing Set Version:Late Model Our Super Sport head comesHigh quality standard size ACL Race Series crankshaft main bearing set. We use these ACL bearings exclusively on all of our in house engine builds. Please choose early or late model depending on the year that your engine block was manufactured. Typically early model is 1987 and older and late model is 1988 and up.