So I am planning on getting a rebuilt long block from Sunwestautomotiveengines.com and I was thinking of getting the upgraded rv cam for a little more power does anyone have one and did it help? The other question I have is they offer a new cylinder head casting for and extra $100 is there any reason to buy the new one they will both be rebuilt with all the same parts it's just the casting? The engine has the same warrany either way 30 months or 30,000 miles.

Thanks,
Brian