I just bought a mostly unmolested Mach 1. It has gone from Candy Apple Red, to Orange, to its current blue. Interior was changed from white over black to black and they put in '70 Mach 1 buckets. It is a matching numbers car. They removed the 2 bbl intake and carb and replaced them with an Offenhauser Dual-Port with a Holley 750. I want to restore to original! What date code intake, carb and exhaust manifolds would be correct. The Car was built 6-12-69, the engine heads are last week of May, distributor same. I want to leave the current intake, proper 600 cfm carb and hooker headers on it but have everything to put it back to 100% original. Thank you for any expert advice as I search out these castings.