You can use a 92 Dak V8 harness & computer to run it 4-5 wires to connect You can have a trans guy put a 3 pin Valve body in your trans & get a speed sensor from AutoMeter that allows you to use your stock speedo so you don't have to go full electronic

Here's how I did my stock tank for an external pump. the original pickup has a notch cut in it so it can support the sender & function as the return