I've been using the V8-style (long-body) filter like we used on the big-block engines. It's identical to the stock filter on our Intrepids except that it's longer -- higher capacity. The internal filter is also roughly double-size so you get less restriction and more oil pressure and volume to the bearings! I guarantee you'll see a difference at the oil pressure gauge. My oil pressure gauge pointed vertical -- with the larger filter the gauge looks like about 5psi higher. There are no size problems with fitting the longer filter to the engine -- fits beautifully and DEFINITELY makes oil changes easier, since the oil filter is easier to get a hold of.