I use an XLE4 PCM in my 2000 2wd in my signature (250/200%) and 4R100. I love it.
As for your questions, to PROPERLY tune a PMT2 calibration, a VRAA7 definition MUST be used. However, there is no reason that a PMT1 base file cannot be used and written to mimick a PMT2/3.
It's not about...