msd ? to use with nos.. im new to nos

[jj_macdragracing]

i know this has been asked before but just neet to hear ot for myself..
i got a 383 stroker from phantom383 and just got a nitrios works kit from a guy on here from detroit want to know what msn to use 6al or digital 6 ? will either one retard the timing for the nos?? and is there a spicific window switch i should use.. not planning one spraying it much ... and new to nos to want to know from u guys what to use.. and also do i need to use a differant spark plug as well?? and also heard making the gap on the plugs smaller.. like around the .30 area??

im looking at doing a 125 to 150 shot.. and its a wet kit
jsut the heater with it
spare tire mount
nv series nos gauge
and blow down tube
also the nitrous dave tb plate
purge
thats whats with it.. and the braided lines and wires

[1fstss]

neither... mallory hyfire 685... its a great unit for nitrous! had built in rpm switch and retard... i use a 6al in my stroker and a mallory 685 in my nitrous car...