Found a donor. Need a Little help sorting it out.

Being it's a 1 ton truck I'd say the trans. likely won't work because almost all 1 ton trucks I've seen don't use a slip yoke like a car does. They use a 2 piece driveshaft with the slip yoke in the middle and the front half bolts onto the trans. via yoke assy. Those trans. are also shorter than a car trans by a lot. You can verify this easily by looking at the back of the trans. and seeing if it is a slide in slip yoke style or bolt on driveshaft.

Sorry no dimensions on the crossmember but I have to ask why? It'd be quite a job to build considering you see them in the for sale section quite often fairly cheap. I have a set of solid motor mounts in the garage. I can take some pics and measurements tomorrow and post them.