gmc to chevy tranny swap

[wc63]

i have a 63 gmc 305 v6 and the transmission is going out. my brother says its some kind of transmission or clutch ring that went out. when im driving i can hear loos plates sliding against each other. i was thinking of rebuilding it but some one close by is selling a 4 speed off a 65 chevy (c10 or c20) for a tempting price. is it easy to switch over to the four speed from the column. i know im going to have to cut a hole in the floor (which i wanted to avoid) but will the bolts and line up will the clutch linkage be in the same area? he's throwing in the clutch disk and press plate with the deal. any advice is appreciated.