Nitrous plumbing A1A...??..

Yeah, certain info is worth keeping, some not so, I think you got a good handle on this now and reckon you will have some good safe results. Shame back in the day we ran things way rich, I could've got in the 10's with my 340 Cuda easy and with less of a shot, thats progress and knowledge.
This might be a good time to reiterate I'm not trying to seek a certain time at the track but, more interested in learning how to use it safely is goal number one...