why is it that JRSC make a SC kit for a type r that only comes with a 5.5 lbs pulley and for b16a and gs-r they come with a 6 lbs pulley? why are they giving the type r less boost? i just found this out recently. im going to get a b18c block and put a b16a head, so ill be like a "poor man" type r. since im doing that i will have to get a type r JRSC kit, but i dont want a 5.5 lbs and really dont get there reason for doing that. does anyone know why? btw, i could upgrade to a 8 lbs pulley for my motor rite?