Bug away, I'm happy to answer any of your questions. Nothing I'm doing is super secret. I'm still learning the tricks and tips myself. Thanks on the titan. It is for a single back bone, will fit the cb750 for sure, so probably lots of other bikes too.
By the way all our stuff has a lifetime parts and labor warranty. If our customers aren't happy we aren't happy. We coat the interior of our tanks with modern epoxy after the parts are built but that can't guarantee 100% ethanol proof. We are working on getting a distributorship with a company that makes "ethanol proof" coatings and we are still in the testing phase. We can coat the tanks for you with this product, you can buy the coating from us and coat them yourselves, or buy the tank un-coated and use what ever product you want. Also these tanks are not DOT approved so use at your own risk, we assume no liability for on-road use.
We offer all of our parts in gel coat, black glass (looks just like carbon but without the cost), and Carbon Fiber.