MSD-8224 or MSD-8241

Wich is best, going to use DIS-4 MSD box.

Or should i use a different setup for my Microtech EFI ignition.

Its a 468, 1000hp+ with blower/n20 and Etanol.

Bought 8 MSD-8230 coils and a MSD DIS-4 ignition. Split 1 driver to 2 coils.

Now people says i cant use twin msd 8230 spools per driver.

MSD isnt a very fast responding company with mail.