I have the 670 kit on my 5.0 on an otherwise stock car. Put some 295s out back, charger is stock to the tire. Tried looking up some vids but no detailed one's for our cars. He just got his so we'll do some pulls once weather warms up. Most likely 20-40 rolls up to 140. I'm thinking it will be pretty close as i have at least 700 less weight. Thoughts?