Before I make a mistake please help new mopar fan!!

Hey this site is great with all the responses. I have good skills hah I can weld and rebuilt ford 302 for alot of friends. Went to school for mechanics and have the patience to do a big block. So basically I'm thinking the low deck 383 would be best for me fairly cheap. Cam and intake and a set of headers. Where can I find a magnum 360 what year that's a option to. I really want a big block though haha. The car has a 8 3/4 rear already and also disc brakes. I will be doing sub frame connectors for sure eithe way. Keep you responses coming it's opening my eyes to mopars!!!