I own a stock XR6t UTE and I ran a 1/4 mile in 14.6sec 2 weeks ago. Bear in mind I ran it with the hard cover on which adds quite abit of weight to my car + more than 60L of fuel (and also running on a stock 5psi boost).
The "slightly modified supercharge v6" piece of crap u're talking about ran a 14.4sec @ 94mph which only ran 0.2sec faster than my stock
Think about it... that car had to be modified to beat my stock by 0.2sec... what so great about that? Btw, the boss might just had a dodgy start... tell them to make 5-10 runs in a row and see how the average turns out to be.
At the end... mods vs mods OR stock vs stock = fair.
E.g. I can't compare mine to my mates RX7 + $20K+ worth of mods.
PS. Next time I might just hang a piece of shit first b4 I go on track... I might just gain that 0.2sec back
