smb, how you doing my "pa" neighbor. i stated before, you'll need frame mounts and of course motor mounts, i'm not sure if you'll need a tranny mount, i believe you will. because i think the manual is different. depending on how old you radiator is, i would think maybe on getting one for your size engine. when i changed from a 6 cylinder to a 396, i went with a four core radiator. one other thing, the front springs might need to be changed. i have the 6 cylinder springs in my car,(69 camaro 396), and they hang the car very low to the point i believe the engine is going to bottom out, so you might want to check into springs. other then the obvious items,(engine, pulleys,tranny,etc..), it's a pretty easy change over. sorry, one last thing, check the lentgh of your driveshaft. you might need to get a different one and also the yoke for the driveshaft. i'm not sure if the one from a powerglide with mesh up to a manual tranny.
good luck,
bruce69camaro