[Unreal]

The d1 is slightly bigger, not 2200 big, but a bit bigger than the d1. Either blower is more than enough to max out the stock motor so you won't feel the limits. If you do a built motor you will probably do a ysi or f1 anyways.

That being said, take a good look at turbos.

Also when looking at blower kits the head unit is just one piece. Look at the brackets, belt setup, intercooler, intake, etc. I do agree with Detoxx that procharger makes some of the best head units, but some other features on their kits are lacking. Their brackets/tensioners usually are not near as nice as the ECS stuff.