Nobody said it was just slapping a vtec head onto a block, obviously changing over to vtec head studs, using the golden eagle ls/vtec conversion kit, changing the crank and rod bearings to gsr bearings etc., etc., etc. Of course this is long, and expensive way of doing it! i've built about 15 or ls/vtec motors for people and i can tell that they are very capable of eating type r's alive!!!

of course half way through building these motors i realized the golden eagle conversion kit was a complete waste of time!! Dropping in the LS crank and Ls rod (stock or forged) is going to give you an LS/vtec without all of the hassle.

but to get back on the subject depending on the head that you "slapping on", you are going to get different compression results!! p72 are better for all motor ls/vtec and pr3 and itr heads are better for turbo applications!