Spacing trans crossmember from frame?

[c-tenkid]

Hey guys I am working on my 69 c-10.It was 2wd I am converting it 4wd.I am working on installing a th350 and a 203 in the truck.I am using I believe a trans crossmember from a 74 chevy truck.

The problem I am having is that the transfer case hits the bottom of the cab and the crossmember is still an inch from the frame.

So today I made a couple 2inch spacers outta of some sqaure tubing I had.Now I have the clearance I need.But it seems like the motor is rocked back a little bit.I have not put a level on the carb pad on intake.
What I am wanting to know if anyone else has done anything like this.It's not the transmission that hits.Its the transfer case so changing the hump in the cab would do nothing.I have a freind that said he installed similar spacers on his jeep when he lifted it and it was fine.


If I found a 67-72 four wheel drive crossmember would it work better?


Thanks for any advice