I am curious to see if you found out anything. I have the same question, an 81 KZ750 with that dinky gas tank...have you heard of any larger tanks out there that would swap over with minimal fuss? It seems that there are a lot of options for the CB750...not so much for the KZ. I was thinking that I may either pick up a second tank, then cut it vertically and horizontally and have more sheet metal welded in...
Always be wary of any helpful item that weighs less than its operating manual. (Terry Pratchett)
81 KZ750H
54 HD pan/shovel
