I have an 89 CRX HF, which has a second gen b16 (b16a2 if I remember correctly), mounted to the cable JDM YS1 tranny. What manuals should I get to be able to look up information for my motor/tranny?

The del sol manual will be the closest (b16a3), the b16a2 is the '99-'00 Si engine and is OBD2. As for the cable tranny part, you can find one online easily (actually you can find both if you search around).