Yes, nearly any non AC big block water pump pulley will work for your application. The OD for this pulley is 6 7/8”, the height is 2 13/16”.
On the crankshaft pulley, my research shows that small and big blocks shared the same part number. When you are ready to shop check out the small block 2 grove pulley listings as this will give you more options to look at. Just need to pay attention to the offset hole pattern on the six mounting bolts. The offset is easy to overcome with a small grinder or round file.