New to Mopar

Hello to all....I'm the new guy to this site and to Mopars (I've always been a Chevy guy).Any way I was looking for a new project and ended up picking up a soild, great running (125,000 miles) 1973 Dodge Dart Swinger.My first plans are to mini tub it,install a 8 3/4" rear,tie frame rails,and put in a fuel cell (tank has a small leak).The only thing that I can't deciede is to drop in a 360 or to beef up the 225 bottom end and turbo it???I guess I have time to figure it out,and I'll have lots of questions along the way.I'm a welder fabricator so I might me able to help someone out along the way.8)