In the past I have had excellent results with VHT engine paint. I cannot find it locally and wondered if the Duplicolor product holds up as good?

I've use both brands in the past. Either one works equally well, IMO.
In Chev Orange, of course. ;)

I'm not sure who makes it ( I think its Duplicolor), but that Ceramakote you can buy at Wally World (or elsewhere if necessary/preferred) is pretty great for the price. It looks WAY better than standard engine paint- it almost looks like powder coating- and holds up well also. Can't beat the price OR the touch up price! The Chevy Orange looks awesome.