I have the chance to buy a 91,xxx mile 72 thunderbird with a 429 4 barrel. The car itself is cherry, and I won't be raping it for the drivetrain, at least not right away. I read at one place this motor is only a little over 200hp stock is that right? How stout is the bottom end? Could I get away with a little freshing up in the heads and intake without rebuilding the short block right away?