I am going to be stretching and my stock frame and i need some opinions on how much to stretch it in the front and how long of a swinger to use. This past year I ran a stock frame with a +5 swinger and a 6 foot wheelie bar and i was hitting the bar so hard i was unloading my back tires. I was running a stock stroke drag ported motor and this year i will be going with a 4mil. Any suggestions or pics would be great thanks.