Another BB swap question........

[bagged91]

I have a few issues I need to clear up in my head.... Here it goes:

I have purchased but haven't brought home yet a 71 C20 sub with a factory BB,T400,ect.....

My 71 C10 is a 307, 3spd....

The BB I am using for my C10 is the 454 out of my 76 CC dually.

I had planned on using the C20's mounts, brackets, ect and just swapping them into my C10 frame and dropping the 454 in but....

Do I understand correctly that the 68-71 BB rubbermounts are like $120+ ea!? Nobody makes a Urethane mount as a replacement???

Will the 76' frame mounts bolt onto the 71' C10 frame & crossmember without any mods???

Last but not least, I read in another thread that the BB/T400 trucks had a high hump floor. My C10 has the low hump. Will I need to swap humps from the donor C20 Sub or will I be OK with my clearance.

Thanks....
Joe