500 cadillac in a 70 blazer????????????????

[outlawdan]

I am doing the 500/472 cadillac swap in my blazer. I have been looking and I thoght I had all the bases coverd but the mounts are giving me a problem on this 67-72 model 4x4 I have seen people make it look easy on a 2wd. I reworked the firewall , got an eldo pan and mounts that were used on a 79 3/4 ton. Do I need to make new perches or what? This motor has been done with new pistons, aftermarket cad company cam, everthing was gasket matched, edelbrock intake, 750 carb, I am sure my rebuilt th350 will last for a few weeks but o'well. I will see. I am going to run 3.73 gears with 35 or so tires. What should I do for mounts. motor is hanging on the hoist right now. Should I just make me some solid mounts, or make some new perches or use different perches?