My estimates give a ballpark figure though funny onion, i dont need to know exactly what its effective displacement is, just a rough idea so i know where i stand. its an sc12 damian, oldschool toyota job with a mag clutch already included Around the 8k mark colin, 5e are pretty undersquare so they dont really like to rev anyway. My 4e sounded like i was murdering it at 8k with my mines, made me feel bad lol. I want going to run the two in parallel, i know i can get mental boost from doing so but i doubt the 5e is good for it, i was just going to go sequential.