For most applications you should run approximately a .034 to .036 gap. NGK plugs seem to be the best in the modular forced induction world, with Denso's in second place. NGk Tr6ix or Denso IT22's seem to be the most often used and liked...
As far as coils, there are several different brands out there for the 2v and the 4v modular heads. Every aftermarket company so far has had several issues, Accel, MSD, Granatelli, etc. One company that seems to be on a very good start with the 4v heads, and soon to be in the 2v market in the next couple weeks, is WeaponX. It seems to be of the highest quality and they have worked well with the boost-a-sparks so far. I would say stay stock or go with WeaponX coils...
The boost-a-sparks work well, but are not that common. Usually people think of it as a temporary ignition fix, not as a ignition upgrade. We have one on our race truck, and it has worked perfectly. Other than the boost-a-spark, our ignition system is stock, stock 2v coils, stock wiring, and the timing being commanded a little higher in the tune. The truck made 967rwhp and 934rwtq with a stroked GT block 351ci modular engine, and the very first 3.4 Lightning Whipple. We also just set a Lightning record. We are now the "World's Quickest S/C Gen2 Lightning" having madea 9.54@142 1/4 at our personal track day last week and backed it up with a 9.66@139 on 7 cylinders misfiring nothing to do with ignition... Stan
