dont cut wires
Make sure you swap the Fuel pump too. Your old one will not handle the flow. If you use your old tranny, place a cooler on it. and take it easy 99% of the time. after all you dont have the HD version of the 4t60e or the 4t65 in your car. Running the wrong electronics is a pain with a programmer and a lot of work (or a good tuner). The same holds true for the transmission you have to swap emp sensor and wire harness if you dont