Ignition system upgrade

I would like to upgrade my ignition system in my SW20 and retain the distributor (for now).
I am thinking of getting an higher output coil and would like some advice.
Can I retain the stock ignitor and use an aftermarket coil?
Should I replace the ignitor as well as the coil?
What brand is recommended? I have been considering MSD.
 

The engine misfires slightly at higher boost levels in the maximum torque range which means that the output voltage and/or current of the stock coil secondary winding isn't high enough. There is no issue with the wiring.
What I am actually asking is whether I can use an MSD coil with the standard ignitor without it overloading and failing. I would like to hear from people that have done this successfully.
I don't need all the programmable crap that they put into the MSD ignitors, so prefer to use the stock ignitor if I can, as I have a programmable ECU. I just need very strong spark.
This is what I am thinking of trying - http://www.ebay.com.au/itm/MSD-8253-Ignition-Coil-Blaster-HVC-2-U-Core-Square-Epoxy-Blue-44000-V-Each-/222178123896?hash=item33bad92078:g:MJEAAOSwOVpXfKNl

Are you using PowerFC or have stock Rev2 ecu?

The question was totally relevant, you asked about ignition system upgrades and the options available would actually depend on your ecu.
For example if using powerfc or stock rev3 ecu you could of converted to 1zz coil on plugs.