Replacement 68 340 four speed cams

The wide LSA isn't necessarily a bad thing. It allows for a high vacuum signal to operate accessories like power brakes, gives decent street manners and also a much more flat torque curve and usually a good bump in bottom end torque compared to a tight LSA like 108 for instance, which would have a more peaky torque curve at the expense of some bottom end torque. It's not a bad thing, it's just different.