I don't know if it makes any difference in effiency but I use the accel cap and rotor. If your going to replace the wires get some better ones. I had accel 8.8, they were good but had to be careful they didn't burn on the headers. I also had an accel coil, msd, splitfires(maybe accel u-groove) and K@N and got over 27(almost 28)mpg when stock. Hard to believe, but true.
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Rick
My 89lx(updated 11/5/2000)
My 97 Cobra