What all can you do to them to beef them up to handle the extra horsepower? I'm looking at dropping a 6.1 hemi in a 67 Dart that's got a 318 and 4 speed in it now. I expect a cam swap to start with and probably some boost down the road, but I'll deal with that when I get the money. I figure with the cam I'm looking at around 450 hp, and I do intend to weekend race the car, though I will be driving it on the street primarily. I probably won't be racing too terribly often, but I figure maybe a few times a month. I'll probably drop some street slicks on it, maybe a backup pair of full race ones at some point, so I expect some fairly decent abuse.
