I'm not an engine builder, but over the years I have had quite a few different engine combinations (experiments) and I like to think I've learned a few things... Some of the things I've noticed: 1) Small blocks rarely ever have the correct deck height - which is why compression usually comes in a little lower than advertised. 2) There are only a couple of Chrysler engines that ever came with forged pistons from the factory - so I would think there must not be too much wrong with the cast ones because they built some hot rods w/cast pistons. 3) Unless your building a killer, compression ratios higher than 9.5:1 are a waste of time and money - You want to drive it, right? 4) Stock rods w/good bolts WILL live well into the realm of 500+ HP - I've seen Super Stock small blocks make power like this and live for years w/no problems. 360's are a pretty good building block to start with, but just remember you're still stuck with a cast crank and if you get too wild you will break it. One more piece of advice - If you're serious about this, alittle extra money spent in the right place goes a long way in terms of "bang for the buck". Let's face it - about the only thing you can't deal with in the the car is bottom end problems. Heads, intakes, cams, headers, etc. can all be dealt with between the frame rails - pistons and rods are a little more difficult.