...I have been told by many that the 200s can't take the abuse of 30 psi and 500 plus horse power levels for to long before the clutches go. They have said 4th only has 2 clutches as opposed to 3rds 4 or 5 clutches?
You can and should add more clutches at even 120mph in a full weight car. Before that even, imho. A fully built 200 will take upwards of 750rwhp I've heard, and I've seen one live at 682rwhp for a long time. They won't take 900rwhp, or even 877rwhp...I seen that too, not on my car though.