So as I indicated before - likely not an engine in a '64 car being 3E10 (May 10th '63) is clearly a mid-late '63 car engine. At least you know if there's a COBRA it belongs to it'd be a '63 car sold in Summer of '63 I'd guess - odds are greatest for this. I'd argue perhaps on the early side of MKII Production. Dan I believe I've heard you say before no June engines built and the next batch was perhaps July/Aug which would then likely fall into a '64 production chassis.... something this timeframe would be good to learn production changes from. If memory serves this would have the timing cover oil filler neck, PCV valve covers and a road draft tube. IT would also likely have a Ford generator with it.