Yes you will be losing weight as you sweat in the car driving it. It makes it easier to work on the engine and you will lose about 60 lbs if you pull the heater box out too. IF you have patience you can do the install no problem. It has good and bad issues, but mostly those stock coil packs and modules i don;t trust anymore. I had new ones in the box no good right from gm, but some last no problem and people have gone 7s with them.
You would have tro build your own tension and make it adjustable with a bolt and slotted hole. Maybe you could even sell them on here for others,
do you want to go through all that work, or just put a turbo tweak chip in and runs 9s like Grumpy