[Tony Radford]

I found an interesting "head shoot-out" article at fordmuscle.com. From what I've been able to determine, it looks like the TFS heads are superior with respect to flow. I'll stick with the ones I have. My header tubes are 1 1/2". I spoke to Alan Weaver, and it looks as though changing them out is not in the cards. There is so little clearance between the exhaust manifold bolts. My existing tubes are crimped a bit to allow the bolt heads to be turned. It seems like this would be a bottle neck for any larger size tubes. I guess I'll have to settle for a bit of restriction.