Hey guys, i hav the opportunity to get a 18R-G (i think) reconditioned head for free (it one of the twin cam ones). At the moment i have an 18R-C in my rona, but the guy givin it to me recons it wil fit straight onto where the 18R-C heads comes off? Is this true? I wouldn't have thought so? If it is, how hard will it be to install? is it a matter if just bolting back into place and hooking up a bit stuff? Let me know if its worth it guys! Thanks heaps!!