VA Gen IV or Gen II Super?

[DRJDVM's '69]

I'm trying to decide on my AC system for the Cuda.... so far no one from VA has returned my call or email.... I've got the catalog and gone online, but the info so far isnt helping me much

I'm hesitiating on going with the Gen IV since it seems so massive..... the Gen II is smaller by a couple of inches in several directions. Since I'm going to be running an EFI computer, trans controller and a bunch of other electronics, I'm concerned with under dash space....

So from what I can gather, the Gen IV has more "fine tuning" ability for heating and air, and is probably alittle more efficient,,,but is there any other big diff that would make the extra size that much worth it ??

They both run electric servos, so no cables or vaccum etc....

The car is all aftermarket, so I'm not talking about the Sure Fit type system....