Ok, so Peters memory was not correct or bad information somewhere down the line. I just took closer look at the engine...5 bolts on the valve covers = Windsor right?
I edited the ad. I have a friend that might be able to put me in contact with the Roush guys who were working during the time of the build. I will see if I can get any more details. All I have now is a Roush invoice with 3 pages of parts (no engine identified) and labor for Development engineer, Development technician, Machinist, Engine build-up tech and Vehicel painter.
Guess that's why I am on here ensuring what I have is good ;-)
Brian