Actually, the 700 has a mechanical 4th gear (od) and then a torque converter lock up. My current setup is a 229V6 with a 200c three speed with a lockup TC. So it's just a matter of making sure I wire the TC correctly to the existing controls. The carb will either work or get replaced. I'm not going to mess with the electronics.. I had a '92 E150 that was MPFI on a 351w. While it got 17mpg empty at 70mph. It was a beast to work on. This is an old car with no provisions for a computer so it's not gettin one...