What’s up guys I’m not sure if I wanna go ported stock crank or 4 mil , I was really looking into going 4mil stock cylinder but everybody tells me to go ported serval from redline but i serval cylinder kit is so expensive compared to a driveline 421 setup.my question to you guys should I go stock stroke ported,stock cyl 4 mil or serval or driveline cylinder. I will be doing supporting mods like ,cpi or hand coned pipes,pwk 28 but might go bigger 33-35mm pwk, stock oem head cut and modified since it’s new condition bought it before I was gonna go 4 mil.+4 timing,driveline hd clutch and hd springs.v force reeds v3 or v4 depending if I can find a good deal. I just find a serval or cub a lot of money if a driveline cylinder can give you similar power for less money that can be spent somewhere else. I also ride trails,street,track, open field and power lines riding a lil bit of everything honestly .the part of Florida I’m in has a lot of sugar sand.