Wheel and Tire Zone and
Tires23 both carry Hawk, but you would have to call to see whether they have what you want in stock. Also
Northern Motorsport, in Hamilton. Front pads for the NSX (I think they're called D503 pads) are fairly common because they're shared with the Integra Type R and certain other Honda/Acura models. The Hawk part number for the HP Plus front pad is HB143N.680.
You could also call
Hawk to ask who else in your area would be most likely to have them in stock.
I've got a new set of those pads here in Chicago that I could spare; I could overnight them to you, but you wouldn't get them today. Or I suppose I could air cargo them to you, but it might cost quite a bit...