IMO, u cant go wrong with the nx nitrous kits. there kits are awesome, and i ran one for years trouble free. u will have the adjustablility as well to go bigger should u decide. form what i have heard as well there kits provide the most rwhp out of all the kits.
If you are new to nitrous I highly recommend a Zex wet kit. As your bottle runs low it auto adjusts to get you the maximum hp at all times. Plus it uses your TPS wire for the Wide Open Throttle activation.
I've used wet and dry kits. I prefer the dry kits. I like the NOS 5115 kit. Just be sure you upgrade your fuel pump. If you're going dry, get a 255 high pressure pump. With a wet kit a standard 255 is fine. The zex dry kit will be good for you too. Don't forget to dial back the timing and use colder plugs gapped lower. You would want autolite 3923's gapped at .035".
NX gets my vote due to a friends recomendation. My buddy who racing in NHRA Drag radial class for many years only used NOS brand, but a few years ago decidid to try NX and has converted. He said the kit was built better IHO compared to NOS.
**Note** These kits (NOS/NX) were used in his some what "street" cars not sure if he's allowed to use spray in DR class.
If you are new to nitrous I highly recommend a Zex wet kit. As your bottle runs low it auto adjusts to get you the maximum hp at all times. Plus it uses your TPS wire for the Wide Open Throttle activation.