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i like the kit from duncan racing. i had it on my warrior when i had stock piston with a hot cam stage 1 and it worked great. its super easy to tune and work on. i now have mine bored to 366 with a je 10.5 piston, ported head, and webb 430 cam, i had to mess with the jetting on the carb but it...

thanks alot, does the fcr37 come with the engine flange? and it i went with the web 390 instead, with the +1 valve would that make it a more mid range engine?

looking to redo the top end on my warrior, l was thinking a je 85mm 10.5:1 piston, and for the head i was thinking P&p, with a web 430 with hd springs, but i wasnt sure if the +1 valves are worth it? and for carb i was thinking the Duncan racing 38mm kit. what do you guys think?