Is this true??/ cobra

[Brady91 GT]

OK, One of my friend tells me that his Dads All stock except for Flowmaster cat back, 1999 Cobra would pull the front wheels off the ground when they would be cruising down the freeway in 5th gear and downshift into 3rd and his dad would punch it and he says they would come off the ground!! It still has the stock tires! I try to tell him that a stock car cant do that but he doesnt believe me! Please tell me if this is at any way possible! So i can show him this and then he can shut up about it!!!!! Thanks!!!!!!!