LSA plays a big role in forced air setups, cams very much designed for NA operation, generally leave room for big improvements, with the VE cams available, its a noticeable value, especially if someone were to for some silly reason try using the N1 cams, they were the worst from what I saw for a forced air setup, combine bigger lift and duration, as well as no great spot for the angle on both the high and low side you end up with a LOT of overlap.

Yes Jr, you can get them reasonable with just cam gears on the P11 cams, the P12 pair just offered a much closer to that of stock and aftermarket, figure. I had a whole bunch of numbers a while back calculating the possible combinations, using the different available cams and retard/advance of available cam gears, but I guess its gone now.