4L60e aftermarket rebuild kits

My trannys on its last leg and I'm wondering where to get a rebuild kit that can handle some HP. I can get AC Delco rebuild kits for less than nothing, so thats not what I want. There are alot of web sites that have kits, but I don't know which one is the best setup. My mods include ported heads, ported intake, CC305 cam, headers, stall, and your usual bolt-ons. I don't want to swap to a TH400 or 350, so thats not an and option. I have a friend that rebuilds 4L60e for a local dealership so he is doing all the labor. I know that the 4L65E is a stronger setup but I was hoping for something stronger than that. Any ideas?

Go to http://www.pro-built.net/index.cfm?fuseaction=viewproduct&productid=48 this should give you everything you need, just add the GM HD sunshell. This kit can handle 625 - 650 HP, it is the input drum that will need to be made stronger. I can get you the sleeved HD input drum for $210.00 to get it to this level with durability. Let me know if I can be of help?