How about stan"s Fibertech? I see that he has cowls for almost anything. I even saw that he will do one-offs Otherwise just do a search for them. Look in the AMA magazine they have lots of ads for glass stuff. I hope you can find one. Also check to see if a kit or plan in the size you are building exists. Sometimes you can buy one from a kit of a plan retailer and make 'em fit. I wish you well on your search.

Mark Shuman