Hercules SDLC/BSC interfacing project - want 3174-x1R

Hello! I have been working on interfacing the Hercules emulator with various real terminals for some time. First project was an Alfaskop terminal cluster which I connected using a small STM32 controller handling BSC. Next is an Informer 213, portable 3178/3174 compatible terminal. It it using SDLC. A friend has a 3178 and 3279 which would interesting to work with. A 3174-51R/-61R/-81R/-91R would be very suitable for this. It would be very nice to test my BSC and SDLC code with the real IBM stuff. I have put my project here: https://github.com/MattisLind/alfaskop_emu/tree/master/Utils <https://github.com/MattisLind/alfaskop_emu/tree/master/Utils> Still very much Work In Progress. If anyone has a type 1 3174 that does BSC and SDLC so I could test my stuff I would be very interested. No need for fancy features like TCP/IP and/or token ring. I of course pay shipping. But can throw in various DEC QBUS stuff as a trade. /Mattis