Mellowme, Back brakes are for suckers! Hahaa.
ProEdge, thank you for the heads up. I never would've thought to look in that direction. I bought the frame as new old stock off of e-bay, and the stoppers were unfortunately not included.
If you're willing to let those go, please let me know and I can PM you to set up Paypal. Or if you're up for a parts trade, I have lots of random stuff kicking around (new and old). Thanks again, as I've been racking my brain all weekend to get this figured out.