318 stroker

Well, a good brakes cam will be smoother at idle. I like this Crane: 691191 It's a solid flat tappet, 238°/248° @ .050, .480/.500 with 1.5s on a 114 LSA. IN terms of heads - the RHS are good, but heavy, and picky in terms of the rockers you use (I hear Hughes makes the ones that work). I'm a fan or RPMs but that's just me. I think by the time either head is ready to bolt on you'll be within a few hundred bucks of each other - with RPMs being more, but also giving a huge weight savings and able to run pretty much any rocker. Look at the "RPMs are junk" thread and consider everything before you make a choice.