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

Depending on your immediate goals(and I'm not tryin to sway you from goin B/RB) but a guy can get an A body very quick with a 360 magnum motor with a Hughes regrind cam and a RPM intake and 750 Holley and do it for less than a grand.

Plus A motor trans are a lot easier to come up with.

My 2 cents.