Stuffed a 440 from 1973 into my 1985 D150 after yanking the 318 out. Can keep that thing running with a screwdriver a couple wrenches and a length of wire from the battery to the coil if the ignition screws up. Can’t replace the sound of those 4 barrels opening up either. Newer vehicles may have Moreno creature comfort in the cabin but the older stuff has more room under the ranch where it counts.