im new to this site but ive seen this done a couple times with three differnt engines. the first was a 4.3vortec it pretty much dropped in perfect, then ive seen a ford 302 sb wich is easier because of the front mount distribitor the 350 is my fave still because i grew uo around comaros when i was lil butif u ggo with this the first issue is the firewall. u will have to mesure a couple of time and cut it to clear the distribitor. call ur local performance shop to price the motor mounts,the ones i priced for mine were about 79 dollars. u have to get an electric fan for clearance issues in the front then u have to modify the core support for the radiator. thats the basic tech i no its easy but time consuming hope this helps. ill keep u posted when i get some more info.