sdandrea1 I see that the 175 and 168 weight driver heads are still available so I'll probably go that route.
Steve, if you go that route remember that driver heads at that weight do not load the shaft like a 196g head does. Most who use it make the mistake of using a flex too stiff (usually a pullout from a heavier head). You will need to go a flex or two softer. I put a Diamana 40g A flex shaft in one of the 175 heads I got with a GBB Epic and it was super noodley in the Epic but in the 175 head it feels just right. I am playing it at 47".