Re: Porting, polish, multi angle valve job
Naturally it will net a power increase...provided it's don't by a competent porter. Just grinding out material can actually hurt performance. Head porting is a science and not cheap to do correctly. The bad part to doing 6.0 heads is it's a gamble on whether you'll crack them and waste a large amount of money.
I'd put that cash into a good intake like Dougs first if it was me. You net some good gains without the risk of failure later.
Spending money I don't have on crap I don't need to impress people I don't know.