5 x 4.75" or 5"

[regan56]

so im in the garage a day ago, admiring my handy work on my 56 GMC after i mounted the springs to my rear end and for something to do i measured my bolt spacing. i had all along assumed i had a 5x5" spacing, not even thinking about it until then. turns out i have a 5x4.75" spacing. in teh meantime i have purchased (not expensive) a set of 5x5 GM rallys, that ive yet to pay for and pick up.... well f##k.

so now im in a pickle...

a) buy the rallys, swap out the entire rear end for a 5x5 set (wasnt a huge fan of the 3.08 gears anyway)and larger gears
b) buy teh rallys, swap out the axles for a 5x5 set
c) abort the rallys and stick with the 5x4.75 and find different wheels.

also, i have no front end yet so thats of no consideration..ill get one to match teh back