Ok folks - I am unable to find a conclusive list of all the Hayes tanks that were available. This website is the closest I have gotten to date:
http://www.hobbyfever.com/advanced_s...rds=hayes+tank
I have also been told by the manufacturer that the 13oz tank is the largest size that comes in both regular, as well as slimline. The 16oz are all slimline.
If anyone has anything else to add, please do so.
Regards.