So as some of you know I have a stage 1+ Jhm SC RS4 but even though it’s not fully completed I still want to go that extra mile. JHM refuse to sell me a stage 2 built motor hence why I’m gonna build it myself however, I want to know what additional components ill need aside from rods and low comp pistons. I have a spare engine so that’s what ill do the build on thereby keeping the car running. Also I’ll be rebuilding the OA3 box with JHM performance kit.
Any suggestions are most welcome.