Last night I received some great pics from the guy that bought our 69 RS a few years ago. He is putting in an LS1, so he pulled the original engine out. This engine is Oct 68 build in Los Angeles and did NOT have a partial VIN on the pad behind the alternator. When I owned it, I tried looking by the oil filter with mirrors and bright lights and I thought I saw numbers in the rough cast area but it was not 'proof' positive the engine was original to my car. Well my buyer Greg got some yellow chalk out and now we know this is the original engine block to an LM1 350 . The VIN is L505849 and now here are the pics of the rough cast area by the filter. Kurt S can add this info. and pics to his records now.