I don't even bother with roll ons because as awesome as the SP 74 is, the 4K stall just plain takes the rush out of it. Lag from rolling on? NONE! This baby is on spool as soon as I drop the hammer from virtually any speed while moving. Therefore, I would say that if I ever rolled on with someone it would be from very low speeds, which is a stalled auto cars forte. I'm sure I could do a little damage to certain folks out there rolling on from 50 MPH, but for the most part you'll need a stick Supra for big time roll on thrust. Here's where I shine: I'm at a light next to middle aged guy in a modded Vette. I light up the S03's for 10 seconds or so to get my joints sticky, then look out of the corner of my eye to see the adjacent light to turn yellow so I can begin to stall my shit up to about 3K... The instant the light flips to green I release both brakes and floor my Dawg. Guess what? Nighty night GM car... I never even heard his holeshot for the ferociousness of my own. So, to sum it up, 99% of what's out there will never holeshot a 4K stall Supra, plus there is a 100% chance that the opponent won't have the gusto to run down a SP74 at 1.8 bar in the street... Life is still good. Thank God for Auto Supras.