Big Block Tower/Motor Mount Problems!!!

[6600DURAMAX]

Finally got around to installing the big block last night and have run into some major problems! The mounts are suppose to be for the 71-72 trucks and mine is a 72 but after bolting the cups/ mounts / towers to the motor the holes in the frame rails to not align. The holes all appear to be off by 3/4'' or more.

The motor is tight to the tranny (a 4 Speed which hasn’t been moved since the small block was pulled) and the rest of the driveline is bolted up as normal(driveshaft, rear end).

Where is the problem???? Can the rubber bushings be turned around??? A member here sold me the BB towers and cups and tells me they were for this year truck. Also from some other pictures, they appear to be correct.

I have tried to pry/jack the motor back to make the holes line up but it only causes the driveline to bind really really bad and the hole still don’t line up. Should I just drill all the holes where the motor sits now or is something wrong???

NEED HELP

Thanks guys