but as far as I'm concerned, I'd be happy with 13's in an sn vert, and low 13's from a coupe when considering the weight of our cars and just bolt ons (no power adders). but if you'r throwing a power adder on you better hit the 12's and an aftermarket block/ h/c/i 12's and 11's are in order. and also, an impressive car in my opinion is the fit and finish of the work and who did it (was it done by the driver/ owner of the car) and consider the budget the car is on. the most impressive cars to me are the nice ones that look good up close, have something original done to them... and run times better than what their combo seems to allow them to run. JUST DRIVE WELL, DRIVE FAST ON THE TRACK, AND TAKE GOOD CARE OF YOUR STUFF, and you'll have an impressive car... i'd be impressed by most of these cars in person