Look at his mods.

2.5" pulley.



supercharged v6 a2a blower whine - YouTube

Seems about on par with what we made with an A/W

Stage 2 L67 cam is about the same as an XP cam IIRC.

However it seems here he has the A/A plate going out to a larger A/W exchanger.

Pauls V6 L67 VT @ BYE performance - YouTube

Here its rockers instead of cam and full A/A.

Again, pretty on par what we'd make.

So why do these guys seem to favour the A/A versus the A/W?

Aside from cost of course. Though both can be pretty close over there.

As far as I can tell, we'd have to relocate coils and remove EGR, Also have to build a custom intake of sorts to accommodate the tubing leaving via fenderwell.