The conversion kits worked awesome last time I used one, and I have had several.

I saw that the new ones have a multispark deal as well.

I didn't ever have any problems. Easy to install but you may have to ream the hole so the extra wire will fit.

Be CERTAIN you have a steady 12 volts. Be damn certain. I had one that worked great but crappy out when hot. Figured out that the voltage dropped when things got hot under the hood. Fixed that and it ran great.