[Mr Pops]

I ended up using the 1973 style motor mount/crossmember. I notched the crossmember to let the motor mount sit flush to the crossmember like it's supposed to. Since the 1968 frame has a slightly smaller C-channel than the 1973's, it wouldn't quite fit without a little adjustment. Once I had it all lined up in the 68 frame, I just had to drill new holes to bolt the motor mounts to the crossmember. Then I took it all out again to buff the frame and get it in primer.. And for you over observant ones, yes, the front diff is upside down and backwards.. not bolted in lol.