My 93 300ZX walked all over thoes things, they are a slow fat slug.
if you want to make it fast, blow it up and get a Z
If I remember correctly w/out looking back, the major magazines placed the 3000zx slightly slower in the 1/4 than the 3000GT in all their testing even beeing about 350-400lbs. lighter, but I may be wrong, it's been quite a few years. When I first bought mine completely stock ran a 13.6@102. Intake & exhaust ran 13.3, then added a ($20) manual boost controller and ran a best of 12.89. I put about $1,500 into larger turbos and fuel upgrades and am now in the 11's full weight & still tuning it out. They are fat pigs, but they do move w/ only 182 C. inch. are you saying the new mustangs are fat slugs at less than 100lbs. from the 3000GT? Or the new Camaros even beeing heavier?
Your friend should sell his car. They are not cpable N/A, but if you want to take a look at what it might take, search 3si.org/forum for "N/A upgrade bible" it explains it all. Most just sell them and go w/a vr-4. They have supercharger kits, and it's possible to TT them, hell some have gone 500+hp on the shitty SOHC engines, but cost more than just selling it and buying a vr-4, then you also get AWD rather than keeping wrong wheel drive.
I joined this site because I have a N/A Mustang sitting in my back yard I know nothig about, and will be searching for info. The motor was setup w/ a supercharger but the guy sold it, along w/ whatever he was using to control fueling. Mustangs are all new to me so I'm starting from square one. I'd like to turbo it at some point, so I will be gathering info from this site, hopefully it will be a decent car once it's boosted.