Reverse manual valve body questions

I think some guys like to go to neutral for the purpose of reading the plugs. They can go from WOT to zero rpm, coast down, pull off the return road and pull the plugs. Never done it myself. There is this here pricey vb: COA-22015-AL - BILLET ALUMINUM MANUAL VALVE BODY KIT W/CLEAN NEUTRAL (REVERSED PATTERN) PRN123N

Exactly! The best way to get a good clean plug read. "Cut it off" Drags and roundy-round too.

Thanks for the link! "Clean Neutral" Now I know the term.
That is a sweet part but how many neutrals doe on car need... lol

So.. that leads me to my next 'stupid' question.
Does a valve body Have To Be reverse to be manual?
Geez, ratchet shifters with gates and lockouts solve the 'oops I just hit reverse' syndrome. It is 2019 and a half...