(same reply on other thread) sooo, you wanting to replace the single nozzle on an NX kit with a NOS big shot plate for systemaxii? whats the problem? are you confused about the jetting? if so, stick with the jetting suggestions of the plate maker (NOS) for that specific plate as a starting point, then tune from there.
(adding this) depending on how old the plate is, it might have two jets for nitrous and two for fuel on a log on side of the plate (the old style), or it will have one fitting each sticking out the back of the plate. personally i found the NOS SMX plates a hassle to use, i endedup getting an NX plate and the fittings were on the front corners... very easy to access.
replaced the 93'ish coupe with a 76 F100, 393, 11.5:1, TEA CNC 205 TW's, custom Hyd Roller, Super Vic, 830 HP, AOD, Edge custom conv., Silverfox SPT-MAC-TB.