Great photos Dougie. Did all AH's run D-production in SCCA? I noticed a lot of Corvettes too, they usually ran B-production I think?
Johnny,
The 100's and the 100/6's ran DP up until the 3000's came out. The 100/6's were then moved to EP. Alan Barker won his 1st of five national championships at Daytona in '65 in a EP 100/6. I had the privilege of meeting Alan and his brother Don a couple of months ago, Alan is still quite a character. At some point the 4 cyl cars were moved to FP, not sure when that happened.
Barry