To tell you the truth there is abit of a story behind this engine. I use to drive a 1970 Mach 1 back in the 80's with a 351c auto and afriend of mine bought a 1969 Mustang because he liked mine and he bought it with out a engine so he went to Holbrook and bought this enigne well to make a long story short I sold my Mach in 2003 because of my health not working needing the money...
and I seen this friend of mine last year and he was telling me that he still owned his but he hasn't done nothing to it since 1992 it only had 200 miles on the engine and the frame was bad on the 69 so i pulled the engine and trans and sold the body on ebay got most of my money back. So I really don't know what is done to the engine All I know is that it runs very good and I should have alot of fun with it.:rockwoot: