If these are the same as breakout then I don't think there's anything common that's compatible. I could be wrong on this but I was researching a missing chip on break out a few months ago and as I recall it was nothing that I've ever seen before or anything common that's compatible. Probably the easiest solution is a CPU daughterboard to replace the roms. That said I could be wrong about the chip.
Yeah the 2k ROMs that games like Sprint and Super Bug used were pretty different from anything else I've seen. I have a Canyon Bomber that uses the same thing that I can't do anything with. Mark Spaeth has talked about making some sort of adapter/ multigame for it but as far as I know it isn't available.
That said looking at your board I think you may still be OK. It looks like those 4 smaller PROMs could be used in place of the larger 2k one. It was not uncommon to see this mix and match on boards from this time