I have a 5.7 that I am putting in a 39 plymouth. I would like to run factory stock parts to stay on the cheap side if possible.

AS I understand the 2003 ECU's did not control the transmission so I was thinking this may be a good option if I go with a 5 Speed tranny. But if I run a 518 auto I will need something to control the kickdown so I would want the Tranny control, which means either a separate TCU or can I use a later ECU and control the 518 tranny?

a 518's kick down is cable operated.... the later RE trans are computer controlled

So with the kickdown on the 518 cable operated can it be used with the drive by wire system on a new hemi?

I think the rams had some sort of set up for it.... I am avoiding the whole drive by wire thing, so I don't know much about it.

I'm either going to use a generic AEM ecu or a GM ECU for the LSx engine.

also the trans isn't an issue for me as I will be using a t56.

the trans adapter thing is mentioned here...when I have more time I can get the direct link

http://www.hotrodlane.cc/