GM OD tranny fit?

ok well this thread seems to have tailspinned. all i wanted to know if if it was easier to fit s GM tranny in because i THOUGH (key word) that i read somewhere some1 did it. i never sed "i say the GM tranny is better"

it looks like im not goin with either a GM or the 518 for the time being, since i h=dnt have the tools or expertise to do the convertion. id rather do the 518 since its a mopar tranny. id hate to use a GM tranny because id have to hide it from my Chevy buddy, but for some reason i thought i saw it somewhere