I see lots of bad info in this thread, so let me help clear some up. The biggest problem with spraying is that most people are complete idiots, and try to spray way too much, don't run the correct plugs and ignition timing, hit the rev limiter while spraying, spray way too long for one period of time, or lots of times in succession. A dry kit is not a fogger, a fogger refers to a nozzle that sprays a "fog" nitrous and fuel mixture. A dry kit is perfectly fine for a 75 shot or less, and in fact is better than a wet kit. With a dry kit you can tap the nozzle further from the throttle body so the nitrous has a better chance of thoroughly mixing with the intake charge. Another problem with single fogger wet kits is that the fuel can potentially puddle in the intake manifold and ignite, causing an intake backfire. I've actually seen a few cars catch on fire from this. Direct port is definitely the safest way to go, but over a 75 shot. The jet sizes on a direct port kit for a 75 shot and less are much smaller than that of a single nozzle kit, because each runner has a nozzle...so in essence each jet would be 1/4 the size on a DP kit. This makes it very easy for a jet to become clogged with debris....clog a fuel jet, say hello to detonation, and goodbye to a motor.

So for your application, I would recommend a dry kit. I went with the Zex kit because I didn't want to go over a 75 shot...I have had no problems with it at all.