I'm going to convert my 87 Chevy 4x4 - 350tbi/t400/np208 over to a 4l80e/np208

I'm swapping in a 16197427 controller and I believe there was a cal for that ecu and the 4l80e

My first question would be what year 4l80e transmissions should I be looking at?

Second question is if I get a 4x4 4l80e do I need to install a speed sensor in the transmission for the ecu and use the current sensor in the t case for the speedo? Or is there better options?

Thanks for any help you guys can offer