Nitrous plumbing A1A...??..

The NOS jets I had were all marked with a number. The front of the jets are all the same size, backs are the actual size, thats normal. So if you go with say 25n jets and 20f jets @5>6psi to be still a bit fat that should be around a 120 shot?. Much less and I doubt if you'd notice it too much. Race only a 125 shot was worth around .4>.5 in ET on my junk but I was well fat on the tune.