That is why I want to do only a mild match porting and cleanup inside.
As it is a GX head, I do not want to mess it up.(Waterchannels,etc...)
It is not going to be done by me.A mechanic is going to do it for me on a flowbench.

Can anyone please give me advice on not hitting anything like waterchannels,etc....?
Is it possible to maybe leave the GX head standard and only add a 276 cam or will it not be much of a score only with the cam.I have read that the GX head is already good enough as it came from the factory...