How Hot Should My Ignition Coil Get

Any chance you have either a link to, or more info on specifically which 500ohm wires you got on ebay? I see many choices on there when I search. Thanks.

ive had mine on the 68 now for 3 or 4 years and still all the exact ohm i checked them at new

http://www.ebay.com/itm/261045845276?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649