B Juice,
If you didn't have a bad day once in a while you wouldn't be able to appreciate those good days.
The big M block weighs 65 lbs more than a mark 4 or 5 block
Your looking at some decent pleminary numbers running down the track. I bet those 60 ft times can be widdled on a little. That will help put that little extra squash in the seat when you hit that throttle.
Lets see a video next time.