re:
An alcy kit is just a replacement for medium duty race gas basically. Race gas allows you to turn up the boost. When you are done turning up the boost then add the juice for even more fun ;-)
If they are both "right" then IMO there's no difference really in burning more air/fuel from nitrous or from more boost. Same result, more air in the cyl to burn more fuel. Screw up either one and you have problems. Having a wb O2 Speedpro ecu makes getting things "right" ***ALOT*** easier IME.
TurboTR