Sloppy monday morning build?

Been trying to stay out of the recliner on these cold days with inside boring gotta be done anyway stuff. Trying to get the small block transplant K frame cleaned up. Under the layers of dirt and grease are the worst factory welds I"ve ever seen. Looks like they ran out of argon and just kept going. Some joints have welds on one side(L-R) but not the other. That and the knocks and bruises from curbs and such make me wonder if it is straight and true. I don't want to spend a lot of time and energy on a warped piece that won't fit correctly. Big question: Does anyone have the specs on the mount bolts, motor mounts etc so I can have some idea if it is useable?

Thanks.