318 block/340 heads?

Just purchased on sat. I confirmed 318 block. How and what to check the Head ID? Has a heavy cam not sure what? Its out of tune. Looks to have the orange box Ingition. Timing Base is at 10.5 BTC. This is my first Mopar! Would love to have some help on tuning it. The carb is Eldbrk 1405. I live in Pen Argyl, PA I would love some hands on help.