I have an 97 Ek w/ GSR. I bought an 6AL used it came with a cap from an GSR. The motor is OBD1, when I went to put the cap on the OBD2b dist. that I have it did not fit. What part number for the ritght cap. BTW the cap came off an OBD2A dist. Sorry if this does not make sense

BTW the dist Ihave is an SI dist.