Marco has them all for $15 each ($90 set) but it looks like you only need U210 and the display ROM for ($15 each)
https://www.marcospecialties.com/pinball-parts/EPROM2276
https://www.marcospecialties.com/pinball-parts/EPROM2277
IMO, you may want to consider just buying your own burner and downloading the ROM images from ipdb https://www.ipdb.org/machine.cgi?id=4674.