um... you're in for fun! first all of the small blocks are about the same, so you can do a 360 about as easy as any of them. the trans will not work. the 6 trans has a different bellhousing configuration. if you can find a 904 cable shift v-8 trans you're in business, but make sure it's up to the added torque you're adding putting it behind a 360. the other alternative I've been looking into is to run a 2004R gm overdrive trans with an adapter plate.
the biggest issue running a v-8 in these is distributor clearance in the heater box area. you can either cut the box and move the heater core, or look into going distributorless on your 360.
