Get a TranGo Noyoyo shift kit for your 700R4, you won't regret it.
It boosts the line pressure and servo holding power.
There's a ton of other things you could do, but not really necessary unless you'r going for a mean street machine.
Get a good tranny cooler. If you have trans cooler in your radiator, use it. Water dissipates heat 4X as fast as air.
