408 build help

I’ve got a running driving 360 la in my dart, just picked up a atk 408 shortblock magnum and some trickflow 190 heads in the middle of ordering parts to finish it but what parts can I use off my la in regards to not having to buy something I don’t need besides gaskets and what not
Can you post pictures of the deck surfaces. Be interesting to see if you got an early Magnum or later.