You're more likely to destroy the igniter or ECU from shorts in that area then the coils.
Which wires were shorted? Post colors and pin numbers:
http://www.cygnusx1.net/Supra/Librar...x?S=Main&P=040
You really need to dig in and clean up that harness if you've got that many exposed wires... it's possible there's a lot more damage than just that unless you know that area's screwed up just from someone dicking with it in the past.
Measure the resistance across all of the coils and compare, that'll help you identify which ones really are suspect... if any. The process is covered in the link I gave you, did you bother to do it?
http://www.cygnusx1.net/Supra/Librar...aspx?S=IG&P=12