Can you guys send a little info / advice my way? I did my swap keeping my 700r4 and np208 because at the time the adaptor kits were way spendy and my trans was supposed to be semi freshly rebuilt. Well, turns out my trans pump is bad / dying off. So now I am at a cross roads. Switch over to a 4L60 / 4L65 or get a fresh built up 700r4 made to handle 4x4 and 450 hp. I am leaning towards going to the 4L60 if I can get all the conversion stuff figured out and keep it on a reasonable budget. I read about and was checking out the advanced adaptors 50-0405e. If I use a 4wd 4L60 and the adaptor mentioned will it all bolt straight up to my NP208? The 2wd needs the shaft shortened, correct? Do I even need to mess with the VSS ring if I plan to keep using the VSS adaptor from Dakota Digitial that I am currently am running and cable speedo on my NP208? I didnt want to use the sensor off the trans shaft because I have heard all the issues with 4Lo freaking out the PCM and shift points. EDIT: I think I found what I need actually... looks like GM # 15005474 might be the ticket? Any one confirm this? Will that still work with the VSS I am currently using and have no 4LO shifting issues?