The New 460 only has a 10 to compression ratio. Uses a stock head with a flat top piston instead of a shaved head and a dished piston. I still haven't set mine up yet. I want to use studs for the head bolt as this is a supercharged engine. I'm saving up for the kit that NR has, pretty pricey. I've been hunting for individual parts. I have found the head studs on Summit Racing. Now I have to hunt down the side studs and see if I can put a kit together any cheaper.
http://www.nrracing.com/product-p/460studkt.htm