I don't think stall speed is a PCM function? Have to check tranny specs on TCC. IIRC diesel TCC stall is much lower then gas...

Oh... wow... didn't realize the diesel PCM was different location, so gas motor and harness and PCM relocate? Big job...

Ahhh... doesn't the diesel use a different TCC? Stall speed?

PM Lextech for a diagram, he's got them all dialed in for the 0411 swap, probably very easy to go 97 to 98, same plugs. little wiring change, PCM looks the same and drops in.

As long as both files have same OS it's a go. Open the file you want changed, File Load Alternate for comparison, Edit, Copy entire Segmant and chose the tranny.

Or I think I can do the 1997 PCM...