everything looks like its covered to me... my opinion, install those studs and go 25-30 safe setting, anything over that you need some internals to back that kind of psi's. Also i wouldn't go over 20 to daily drive to tell you the truth, thats overkill, i mean at 20 you should be over 300hp and...
IF you get it then you are gonna wish you had a gst or x so just save a lil more and get the real thing. They are not that far off from price anyway. Nos will kill that engine quick, specially being that old.
Call them and have the part number in hand. Sometimes companies wont advertise stuff by PN, they will do size and if you don't know it, you wont find it.i cheked the site and they dont have that part number... but all they have for 1g dsm is 255s
If you are going 75 shot for sure you need good internals. Depending on what you spend in the internals is how much boost you can run. I got decent internals but my safe setting is 25psi and i got no NOS
sounds like it was running to rich and not enough spark or the other way around... 20 lbs is too much for factory injectors and pump. like he said, look for a walbro in your car, if you don't have one I'd recommend a 255 and bigger injectors just to be on the safe side... for now i would tune it...