I put alot on my engine build. 4mm stroker, stage 4 head with 19cc domes (215lbs compression each cylinder), Hinson racing clutch system, aggressive trail/mx port from Wildcard, 2 in 1 carb setup with a 33mm pwk, pro circuit platinum pipes, crankcase port, and I have a 15 tooth front sprocket with a 42 tooth rear sprocket. I have a +2 +1 front suspension and use a -2 inch roundhouse swingarm. I can't remember what brand of swingarm at the moment but I really like it on the track. It rides great on the track.
I left a review on my setup a couple years back and it hasnt changed.