Probaly have to change the driveshaft length due to different tailshaft lengths. Shift linkage will be all wrong, get an aftermarket floor shifter to solve that. You will need the TH350 speedo cable gear and end that goes into the trans, I suggest you get the entire cable from a TH350 equipped car as the speedometer end is the same for all vehicles. You might have to fabricate a trans mount or drill some new holes. Don't forget to get the right yoke for the tranny end also, you can adapt that to the existing driveshaft.
Anything I missed?
“She may not look like much, but she's got it where it counts, kid. I've made a lot of special modifications myself.”
— Han Solo