There is a small round cup that bolts from the back to support the starter nose. There are two holes in the sheild for the 130 or 143 flywheel mounting. Also you can buy the small parts kit new. as far as offset pins check it first with the stock ones. Mine was fine with stock pins.
You may need longer pins for the blow plate between flywheel and block.
Also I would suck it up and order a new one so you start off right.