the 05+ WAPs used in the 05+ 4.6 Mustangs and aluminator engines are even stronger than the Teksid. There's little worry of splitting a 01-04 WAP block though. The internals will fail first 99% of the time.
IMO Much of the reason the WAP is considered weaker is that SVT used an iron block in the terminator instead of the WAP used in the 01 Cobras/Mach 1. Most speculated that the WAP was too weak for it, and I believe SVT even perpetuated that rumor. These days I think it was less of a strength issue than it was a fitment issue. The 03 Cobras Eaton will not physically fit a WAP block due to the knock sensor bosses. Those need to be ground down for the lower intake to fit on eaton swap cars. Plus with the slew of other semi exotic parts on it, it's cheaper to produce a cast iron block than aluminum which would have made the car slightly more profitable.
Last edited by XR7-4.6; 07-06-2013 at 11:44 PM.