86-blk442 said:
Can't remember, but you may need different mounts. The frame mounts should be the same though.
Frame mounts are the same and the engine mounts are the same as the stock 307. Drop in and go.
Biggest issues with fitting the BBO is the heater/AC box clearance as well as header fitment. As mentioned, clearance issues with the heater/AC box will be dependent on the condition of your body mounts. In my case, I had to cut, trim and fiberglass clearance in the box for room.
Headers are available for this swap and come in a few different variations. Cheapest (but still in the $400-$500 range) are the Hooker engine swap headers. However these have one tube on each side that actually runs into the wheel well, wraps around the frame and then comes back in to meet up with the other three tubes at the collector. Fine I guess for a drag oriented car but if you want to run normal size wheels/tires or something wider then you'll be smacking those tubes when turning.
The more expensive ($650+ uncoated) would be Kook's (now Dick Miller) headers. These fit inside the frame and are beautifully made. I have a set of the 2" primary/3.5" collector headers on my 455 and they fit great. Tight but still fit.
But with all that said, if your looking for mostly a good street performer then a set of reproduction W/Z exhaust manifolds will work perfectly and are much less of a headache than headers.