There is no question a glide would work and it will tone down the launch hit.It will also make the engine work harder and put a lot of stress on the trans.Choosing the right converter,low gear set and maximizing the clutch parts and other internal parts is a must and as mentioned the cost of a good bell,custom shafts and gear sets arn't cheap.Usually with a heavy car you want a 1.8 or 1.9 low gear and a deeper rearend gear to match you RPM torque and power ranges.You will be in high gear for most of the track and need to watch you top RPM carefully.Even with big power or power adders you will need more maintaince on the PG.We use the PG in some of our light chassis cars with good results but find the the TF is more cost effective and take less maintaince in heavier backhalved type bracket car.