I am not sure Docmanrich37 even got the engine hatch back on his Baja before he blew his blown 496HO.
My suggestion, although I have no personal experience, is to go with a Raylar Package. It just seems like a more sound way to reliably pep up the 496.
Myself, I am going with extended warranties on the HOs and the XZs. I like going fast, but I am not racing, and I like spanking down my warranty card rather than my credit card.