I've heard on here that Magnecor makes good wires. Took me awhile to find a place that sells them. I just bought a set of the KV85 (8.5mm) for my '87 for around $133 through
http://www.apexperformance.net/magnecor.htm
The 10 mm would not fit my existing wire holders without modification. The 8.5 mm wires are said to fit. Wires are red and really look neat (I'm not ashamed to say that I had to have red).
They are made near Detroit, MI.
Magnecor website is interesting and includes a manual with applications/part numbers.
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Good luck
Bob Sauerteig