I am going to run a 88 pontiac 350engine and 700r4 trans.It was tpi computer controled system but am changing to carb.I need to do something withe the trans .I will be running new Dolfin gauges with elecronic speedomiter[58 CHEVY TRUCK]and have to run a speedo system without changing the tail shaft or run a mechanical speedo Can someone tell me what would i need to do for speedo system .Thank you