Is that the motor that revs to 8300?
I considered it but I found a low mileage LS1 with some extra bits for low bucks.
You can go onto YouTube and listen to different exhaust systems for this motor. I personally liked the Borla the best with the X pipe. Sounds V8 at idle the on the top end kind of Ferrari.
Kennedy makes the adapter for several trannys that you can put in there.
You may be able to keep the stock water pump due to the shorter size. The LS1 you need an electric water pump.
Could I get a favor from you? I need the measurement of that motor from the front to the rear of the block. I have had something in the back of my mind for a while