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Hello , Currently have a 650 93 superjet and have this ported cylinder I want to install. exhaust ports widened and port matched, bored to 77.50 with pistons I also have a west coast head currently on my stock cylinder ,I think it's 28cc or 33cc domes, should I keep westcoast head ? or get a...

I currently have a Blaster II 760 that was rebuilt with new case, crank pistons and has a new rec mild port job from riva , I have the big red riva pipe Mikuni modified Buckshot carbs 44 - Spidgot type Riva Girdled head 38cc domes I had the same setup last year but I think I had a lean issue...