Ahh god.. ok the Collari is OUTTA the question..

BUTTTTT NOW I HAVE ANOTHER ENGINE!

the MR Ninja MR21 B01 5 port! It looks awesome! Mugen claims it tops out at about 43k RPMs.. but Ill guess it actually tops out in the High 30k's ... That engine looks awesome, really... what would you guys choose?

Also... I'd rather choose a higher end pipe.. any suggesitons? Thanks..