77 > 86 GMC pw/pl swap?

[C10N.UT]

Hi

I acquired a 77 GMC sierra classic with power locks and windows(along with tilt,a/c,rallys,and a 454)But the body is less then desireable to say the least(lwb and rusty).....My question is i can get an 86 swb GMC with a 305,4spd and power nothing(base line truck with rallys on it?) for and was wondering if i could swap the power windows/locks over to the 86 with no problems or am i need tons of wire splicing or wire harness swapping to do so?If i can i would like to swap the tilt and a/c over as well in the future.

Any help and previous experience would be great!!

Thanks