I have an 85 K5 and was wondering if anyone has done a 4L80E swap on an older truck like mine. I know the crossmember has to be modified or moved back but the mounting points for the adapter are also different. If some of the diesel suburbans had the 4L80E can I just go to the junkyard and get a crossmember from one of those? It would be the right width for my frame and have the right mounting locations I'm guessing. Anyone know for sure though?