If you can swallow the price tag I recommend the best Snow kit you can get. I think injection based on EGT is more useful than boost for towing. Staged injection is the best way to go. I saw an ATS kit called Waterboy that used separate solenoids for each larger injector and that was ideal though it took up a bit of under hood space. I go through a new pump almost yearly so that is an expense snow hasn't warrantied for me. Power is seat of the pants noticeable, EGTs will be noticeable but can't do much at lower RPMs without being too much water. Smoke will lighten in color as well. If your EGTs are on the high side and you're looking for a mild power upgrade I recommend water injection.