H&H is alive and well. Every summer they have a large all Chevy show. This year it is July 16. Dad and I make sure to attend, it is a great time. Last year there were around 400 cars there. It is free and unjudged. Very casual day.
Each year they empty the showroom and have a specific theme or display. I think a reunion of original Hi-Po H&H cars would be a neat idea. If anyone is interested try calling the sales manager and pitching the idea. I do know there is an original owner burgandy 69 SS Chevelle sold by H&H that attends every year. Beautiful car.
http://www.hhchevy.com/specialevents.php