Advise on 360 build

Right now I have my 66 Dart GT(pic in avatar) 273/180hp. 904 tranny. 7 1/4 rear end. Just bought an 8 3/4 and plan on running 3:55 suregrip. added vintage air and keeping that installed. Not going to race the car on the strip, but want something with some guts but yet streetable to drive more than just around town if I choose to. The quote was a guy from Michigan who is strickly a Mopar Engine Builder. I am waiting for a guy from South Florida, who was highly recommended from guys here on Abody. I am in Deland, Fl. close to Daytona Beach. I appreciate all comments and/or suguestions!!

Thanks, John