[3.5litermoose]

You can fit a inline six in your car for about 4 or 5 thousand dollars and then it will really move, but i dont think that includes labor. The best engine swap that will really make your car move is the M50 engine swap.
But if the engine is in such bad shape, the car as a whole is probably not in very good shape. if your from up north, then obviously everything will be pretty rusty from the salt. i would check out all that before doing any type of engine swaps or engine overhaul.