Should I leave it Stock?

A stock 273 2 barrel car is not a high $ car so stock just doesn't matter. Put a stock 68-71 340 in it and if money is a problem leave the stock manifolds on it with dual exhaust and change out the rear axle to a 8 3/4 and you'll be the happiest man on earth. I know done it a lot and it makes a cool sleeper.