I'm debating on having my transmission guy build my transmission instead of buying a complete unit. what all should be used to build a transmission like the complete unit you would get from say DTT, Suncoast, ATS, etc? I guess I'll use the triple disc TC and whichever valveody the company I choose recommends. What else do I need to upgrade, clutch packs, bands, shafts,etc? This truck will be used to tow a lot and may see the occasional 1/4 mile track, but will also be a daily driver. I would like to get it in the 600's eventually, so I might as well build it to handle it.