[Healeys] 100 Block

[Rich Chrysler]

Speaking of differences in Hundred engine blocks, I have a customer's
Hundred engine here that has only one distributor clamp mounting hole,
instead of the usual two. When looking at the distributor side of the engine
there is the hole for the distributor body and only one threaded hole
located just aft (to the left of) the distributor. Has anybody else seen
this arrangement?

Rich