i dont think its your plugs or wires since there only like 3mos old, im thinking its a bad ground to the coil or the coil it self is bad, i have a extra coil that is good that i will bring tomarow and we can swap it out and see if that is the problem.
98 svt sil/blu 3.0 oval heads full P&P, msds headers,bat kit,2,1/2exhaust 30 inch glasspack and 2 spintech mufflers 14.78@94mph
with my mechanical arm i can shift gears in less then a twentieth of a second for sale $7000