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Those wires are spiral wound but at 8 years I'd replace them....Magnecore or Clewetts are good choices and old wires can cause a miss like that.
I'd start with a tune up..rotor/cap/plugs/timing/valves set and wires and go from there.
What is your AFR? With that compression I'd want a 3.5 to 14 (it moves) but with most of the activity in the 3.5/3.7 range and a stomped WOT in the 11's.
I'd also want cooler plugs with the fatter AFR....
The best onboard tool I have is an AFR gauge in place of the clock...I can monitor 'health' and fuel delivery in real time..... for a track car I'd consider that a must.
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De Oppresso Liber
Strength and Honor 5th Legion
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