Ive just met the importer/distributor on my last trip to Brisbane of Japanese made SpitFire Coils and is able to get them for Ca18's.
He is able to sell them for $475 a set of 4 including postage if anyone is interested, he can only do them at this price if we get orders of 4 sets at a time or $530 if bought at 1 set a time.
Other makes are also available including SR20's too.
Also available are pulley kits, Nismo injectors, silcone piping, intercoolers. Tomei SR20 cams/head/rebuild/stroker kits.
I make/get no money out of this, i just found him to be great to deal with cheap on parts. And would recomend him as he's supplied half the parts for my 1200's rebuild and all the parts to mates 180SX parts.

Reply here if interested in the SplitFire Coils and PM if interested anything else.
Cheers
Jake