2v Power Coils

are the MSD or Granatelli Motor Sports coils worth it? Ive seen them advertised 15hp gains and was wondering if there worth it? I have the most common of add-ons already on my 99GT

I'm gonna be the first of probably many and say no. With your mods they probably wont be worth it at all. You *might* pick up a couple HP, maybe. The factory coils seem to be up to par for just about anything. Alot of guys are running a blower on stock ignition and it does just fine.
 
I went with the MSD and some Autolite plugs just put them in def difference alot smoother like you said at high end and noticed it in low end as well I like to run high octane and I think its burning alot better smells better from exhaust like CAM2 or VP red race fuel