Well, the reason I wanted to know what year your SSEi was is because I wanted to know if it were Series I or II. Obviously it is Series I, and I don't know about those, but on the Series II the MSD coils are useless and you are better off with stock coils. Zooomer (owner of ZZPerformance) runs stock coils on his 11 second GTP and says that they give PLENTY of voltage and MSD coils only cause problems and burn up plugs. Now I don't know if this is true for the Series I, but I dont know that I would hesitate to switch back to stock coils and new plugs and see if that is any better, because I think it may be. IIRC most, if not all of the 10 fastest FWD L67'* run stock coils. Now MSD wires on the other hand are good wires, but the coils IMO aren't worth the money or the trouble. That is just what I will tell you from my experience with L67'*.
1990 Maroon Grand Prix STE McLaren 3.1 Intercooled Turbo, 14.695 @ 94.49 on 12psi before cam/heads/etc.
1990 Bright Red Grand Prix McLaren 3.1 Intercooled Turbo, 14.819 @ 92.72, 189whp
1999 Grand Prix GT 9.75:1|K&N|160 tstat|No Ubend/Cat/Res|UD Pulleys|Ported M90/TB/Heads|XPZ|2.55"|Pacesetters|Stage 2 I/C. 12.442 @ 112.78
2000 Blue Bonneville SSEi Supercharged Gutted Airbox|K&N|3.4"|1.9'*|WP Pulley|Custom DHP|180*stat|41932'*|No Cat. 14.681 @ 94.80
2002 Dark Cherry Grand Prix GTP Supercharged & Intercooled
12.084 @ 114.38 w/1.743 60', 315.6whp, Fastest Stock Cam M90 GTP!
NOW XP CAMMED, 340.6whp with XP, stock heads, Gen 3 M90, 11.984 @ 115.84 w/1.750 60'!
Most HP Stock Heads Gen 3 M90 GTP!
2004 Red Monte SS Supercharged K&N|3.4 Pulley|1.9'*|180*stat|41919 plugs|3" dp|No cat/ubend|DHP|Shift Kit. 14.2 @ 98
GOT BOOST??? Friends dont let friends drive stock!