SB,

The misfire will show up on pin 8 on that HFM model.., coil output also will trigger a code on the same #8 module.
As you state , most likely is coil to plug connectors misfire coupled with injectors being shut down b/c of misfire...these connectors do not get changed when they do the wire harness [ why not is beyond me ]..but I learned from you to change them out when doing plugs regardless.
I would also make sure they have not gone with Plat plugs on you . Same misfires with occur with plats on 104 HFM engines. [ possibly due to Waste Spark set-up of series plug wiring] ......Like to know your opinion on that ,SB..if you would..

T-Bell,

..here is some code info for that system
http://www.peachparts.com/shopforum/showthread.php?t=107630