Jerry -

If I'm trying to research and learn how the software works on the 96-97 PNP unit on the msefi.com website, what should i be looking for?

is the MS-I or MS-II processor used? it seems like from the product description on your site that it's the MS-I, but from msefi.com it looks as though only the MS-II has ignition timing capabilities which certainly your product has.

is the version of Megatune i should be researching the MS1-Extra-Hi-Res HR10e?

i don't see any installation articles for the PNP on your site, is that because you truely do just plug the existing wiring harness from the OEM ECU into the MS?