While your at it Have that cylinder Stainless steel O-ringed. It will help the motor live a little longer because it will keep the coolant out of that cylinder. Those cylinders are notorious for leaking just a little, and that's enough to cause problems.
I can give instructions on how to o-ring a cylinder if anyone needs it. You need a lathe and the ability to take your time and do a good job. Pretty easy but if you screw it up your cylinder is junk.
Anytime we ran nitrous, nitro, or even high compression on a bore larger than 96mm we would o-ring it especially on the billet cylinders. Its just cheap insurance.