No is isn't, I have personally had a 72 Demon with left hand threads, NEVER been altered, so you believe what you want and I will rely on my 40 years of owning and restoring A-Body's.
Last edited by Rhinodart; 05/09/1805:13 PM.
The funny thing about science is that if you change one miniscule parameter you change the entire outcome to the way you want it.
