You can save alot of money if you just look for good used stuff. If you are really wanting to not loose much on bottom end Id probably look for a used tr220 on a 112 for about $200. You can find used hardened pushrods for around $75 and then just get the patriot valve springs new. I found my cam brand new in the box but someone bought it years ago and never installed it. Got it for $250. Just got to look around. Check ls1 tech classifieds too.