then you would have to buy shafts and hold downs if you didn't have some laying around. And with ARP stuff, i would just buy them complete. Not that much more, really.Another 100 bucks, then you have a proven bolt on deal that works well with the heads.
Yes, if you don't have the stuff its worth the extra $150, but I am sure I'm not the only one who already has more heavy duty shafts than I need and I like a different hold down as well. Just another option.