i guarentee that changing plugs in my car is a helluva lot harder than you would encounter. On that note, I recommend NGK Iridiums. I bought them from Napa for $8.50 apiece. A guy on Turbomustangs.com recommended them to me. He has had great success with them over conventional plugs. They have lasted him 10,000 miles with no fouling of plugs. He has a similar setup to me with the same TT kit. They are part # 7164 from Napa.
1993 LX hatch
Incon 800TTi, AFR heads, Holley intake, stock cam
11.21 @ 124
480 whp, 520 wtq (10 psi)