Wow, 33 months, 132 posts, and 7,274 looks later and the problem is still not solved!!
This has to be some kind of a record.
Brother please don't give up now, you've got the entire nation of the ZR-1 brotherhood pulling for you.
While you're at it replacing the coils you might as well replace the plug wires if you have not done so earlier.
Saw an Accel set listed over on ebay that may be had reasonably:
http://cgi.ebay.com/ebaymotors/Accel...1%7C240%3A1318
Good luck and may the force be with you.