I have multiple topics for the same effort/issue. I have two b210's. one runs (78 uses D4F with EI control unit), the other doesn't run (77 points distributor). I'm converting 77 to D4F EI from points. I tried an HEI, and didn't work through many trials and correct and reversed wiring. I then pulled the EI control unit from 78 and used it in the 77 and it worked, so now I need another control unit so that both my b210s can run. purchased the Standard expecting it to be compatible for reasons already stated. I have not been able to get that HEI to work in either car. apologies for confusion.