Well, I don't know what your combination is. What kind of ETs do you have now? I guess what I would consider, is, is this a street car or pure track car? Powerglides are great for improving traction and alot less violent at launch and going down the track. Powerglides when built right can can withstand a boatload more power. All of this is good if you are running 9 sec 1/4 ETs or better. Don't get me wrong, I'm not saying a Powerglide would or wouldn't help you, I don't even know what your combo is.