Fingered intake, widened & squared exhaust up a bit. Nothing crazy. With vertex piston and a countersunk head would rev out 13k+ on derbi piston port. After blowing those cases, slapped it on an e50 and still chasing getting it dialed in. Stroker crank fixes spacing issues with vertex piston, so un-countersunk head to match flatter piston profile. Broke skirt on piston so waiting on parts atm
