Ok so it goes like this, I bought a banshee advertised to me like this (cool heads, 4mm stroker, drag ported, runs alcohol with lectron carbs). What I know now is cool heads not sure of dome size, lectron carbs on alky, stock stroke and ported.(not sure how much). I detonated the piston and want to go ahead and put a 4mm stroker in it now but I'm not sure with the porting I have now if it will work and if so what all I need to do. Please help any information will be appreciated.