The 200R4 is a later version of the 700R4 but it is my understanding that it requires a computer whereas the 700 series doesn't. I could be wrong about the 200 but not about the 700 as I have one in my 57'. My personal choice for any six would be a TH350-400 especially with a 3.70 rear or higher. In fact I may go back to it in the BelAir.
Correction I just learned that the 200 series does not require an electronic controller.
Last edited by 53moneypit; 11/25/2010 5:08 PM.
