I have been having engine problems with my 2011 Ram 2500 4x4 5.7 automatic for awhile now. I believe a stuck lifter wiped out the cam (I had been getting misfire codes and it was running rough below 2000 rpms) before more recently the engine seized while going up a mountain pass. I am trying to figure out what to do with the pickup as I haven't been able to source a replacement engine locally. I am wondering if I can find a later model 5.7 or one from a Ram 1500 or car and then replace the camshaft and lifters with the correct VCT, non-mds cam that came in the 2010-2012 Ram HD models like mine? Or, can I replace the engine with a later model Ram 2500 6.4 Hemi and have the computer reflashed? It looks like other people have done the 5.7 to 6.4 swap on 1500s, etc., but I haven't been able to fine much about the 2500s. Any and all help is greatly appreciated, thanks.