[padresag]

your right he is out of spline on that rear slip yoke( i enlarged the pic for a better look). that is the more important one for in the 2 piece setup for movement. if not it will pound the rubber cushion out of the centre support in no time. if that one is working properly then the frt shaft doesn't have to move as much. i would just section that centre mount to lower it to the same point in elevation that the orig was.
easy to raise that trans mount crossmember; just mount it on the top side of where it is and just space it up a bit. there could be another possibility why this looks that way. he frt motor mounts could be higher doing to the person who installed the eng. they may have installed later eng mounting, and some are a little higher than others. a lot of people just stick these things in these trucks and are not really aware of how things should be. they just stick it in. the centre line (axis) of your crankshaft should be on about a 3 degree drop from frt to back. but if you could put a level on your carb mounting flange(manifold), that should be level from frt to back.
ron