One option might be to dump the "Race leathers" idea and opt for ANY leathers. Goto a nearby, well stocked Harley shop and check out their leathers. You might find some decent black leather pants in sizes you could work with.
Second, goto custom tailor to either shorten up the legs to fit you, or build you a total custom fit pant. The latter would cost alot more, but you ARE worth it.
Vanson will custom make a set to fit just you and only you. They have full instructions on their website with the proper procedure to measure all of your measurements to get it just right. Look them up on the web and see what you think.