Paul from the MEGA65 project here.  I'd be surprised if you couldn't run your core on the M65 PCBs we are designing.  We have an Artix7 200T-2 FPGA as the main component. 

We are also keen for other projects to make use of the board, so that the production cost can come down for everyone, and that it can, hopefully, stay in production longer. 

To that end, if there are specific functions or devices you would like to see on the MEGA65 PCB, please drop me a line.  I can't guarantee that we will incorporate them, but now is the window of opportunity to see what we can do.

Paul.