I run a Nitrous Express 125 nozzle on my 91 LX. I have destroyed 4 F22A1's over the past 2 years though

Good thing you can get F22A1's for like 200 bucks from the junk yard!!! I wouldnt have it any other way though... that 125 nozzle wakes the car up

If your friend cares about his car, I would advise him not to exceed a 50-75 nozzle.. I'd lean towards the 50 on that V6 as they are fairly high compression.