s10 v b2000 frame measurements axel measurements

sup guys helping my bro out, hes thinking of swapping his mazda body on 2 an s10 frame & he was wondering if anybody has measurements he knows the s10 axel is smaller but unsure how much smaller as hes trying to figure out back spaceing issues on the s10 frame with a mazda body & so forth

wow... why??

well he has 2 frames he has easy access to.. also his frame is fucked thanks to a shop in town... kustom toys in porterville ca. hes been told the s10 frame might fit. hes also been told the rear end is smaller so hed be able to find rims that might tuck easier. so im looking for measurements if anybody has them

I don't even know what to say.

ok why.... does it sound like to much work or something or pointless or what? im not trying to be argumentative i just wanna know your thoughts.