Will an 81-87 cab bolt onto a 73-80frame?

[notyettoday]

Hey ya'll,

My 78 gmc from michigan has terminal body cancer all over.. and i was wondering if i could put an 81-87 cab on this frame? i learned the hard way that the bumpers are not interchangeable so i figured i best ask first.

I'm also contemplating swapping to a manual tranny cab while i'm at it, but i'm curious as to whether there would be a good improvement in fuel economy over my brand new th350 w/shift kit.. i dont know of any overdrive manual trannys that they put in these trucks, but thats something i'd like to look into.

Thanks alot for any thoughts,

Will