If there is a u pull it junk yard near you go there and purchase every thing you can from a   V-8 bird RE: pulleys any brackets from the front of the motor, and unless your going with a carburated engine you probably need the computer and possible the wiring harness.and then there is the problem of exhust and making sure you get the right transmission to bolt up to the engine you going to use. changing over to V-8 can be a real hassel if you dont do some research first. If you can find a V-8 bird and switch everything might be easier. or better yet just buy a nice V-8 bird. sell the one you got