Auto R/T challengers down here are running solid 14.2-14.5's at 98 mph. That's what I ran in my car back when I only had a tune and CAI with my 2.73's. You may keep up with him for a 1/4 mile as you are now, but not for long. His gearing and extra HP will eventually overcome the weight advantage and pull on you when you start getting up to speed. You really will need better gears to equalize the cars.
on the flip side, you can always say that you lost because you have two less cylinders and gas saving gears if you do. That always trolls people well.
Current Mods: 19x8.5 Charcoal AMR Rims, Bama Tune 93H, Airaid CAI, FRPP Sport Axle Backs, FRPP 3.73 gears, Boss/CS/GT500 Rear Diffuser, GT500 Rear Spoiler, GT500 Mud Guards, Raxiom Reverse/License LED Lights, OEM Take off Black Charcoal Leather, GT500 Steering Wheel, Auto Headlights, Chrome 3.7 Badges, Quarter Window Louvers, Dark Matter Tint
Future Mods: Matte black GT500 Stripe, Black Billet Grilles, Stillen Front Chin Spoiler, Roush Side Splitters, Painted Mirror Caps