yeh head will be off to the mechanic to get a check up and spec check, also a clean up[:p]
im not sure on the actaual size of the valves, but the ones in are a size up from standard and have been machined to also suit the next size up, which is in the plastic box???if that made sense???thats all i got from the guy so far.....haha
the other cam is a larger one for a carby set up so will either be sellin that on hear or to my bro?...the RL31 is actually one of danny's old ones....
cheers
rhys