I have not seen a set of his headers that I know of but I may have seen a set that were his and did not know it was from him.Motors are just air pumps.I have designed and built my own headers since the late 70,s.Every different size engine has a specific length of its tubes and diameter.It is not black art but an exact science.I built a 3.4 with PMO Carbs for Howard Altman from Easton Pa.for club racing in 2000.It made 408 H.P.I used the same dyno as Peter Dawe for 30 years from Hank Clarkson.After two seasons the motor needed to be freshened.He called me but I was retired.He had it redone and they changed the cams,heads and exhaust and then it only made not quite 355 H.P.He sold the car and bought a cup car.Email me for a picture of my last system at
carolapgar@hotmail.com Fred