Gaskets?

On the timing set, the timing cover gasket is the same. The rest of the gaskets in the set are different. So, you have the right set if you are using an LA timing cover setup.
Head gaskets, intake gaskets, exhaust gaskets are different.

You do need to get an oil pan with the center sump and change your oil pickup accordingly. You will need an oil pan for an LA 360. A 318 oil pan won't work, different rear main cap.

I emailed Mancini and didn't get a response, so I called. The guy told me they could get the parts, but would only give me a ballpark price for the parts. Would not give me a price on shipping and handling. I bought elsewhere.

Good luck with the engine.