So I just bought an 89 DX hatch today, and am picking up a SOHC ZC later in the week. I was also looking into putting a D16Z6 head on the ZC and possibly converting to OBD1. I'd appreciate any tips, links to helpful threads etc. My only question is whether it would be worthwhile to converto to OBD1 not only for VTEC but also for future tuning capabilities (uberdata, etc.) or if I should just stick OBD0 and use an RPM switch to activate VTEC. Thanks in advance for any info, heads up, etc.