I just talked to a guy tonight what has a 3000 pound fairmont wagon with a n/a 2.3 running 15.5's with a stock head...That's damn sure not normal though.
i have a 2.8 ARCAheaded engine in the garage i may just take off the Turbo and try it to see..lol..i know some of those are a lil over 300 HP...this one has less compression so id rather use the Turbo....No N/A unless all turbos dissapear