If you want to run two amps to that sub, your best bet would be to get two strappable amps. Strap them, and hook them up to your sub with coils in parallel. The coils in parallel on that sub would give a 2 ohm load, but that would be split in half by the pair of amps, resulting in a 1 ohm load seen by each of them. This would be best to get max power out of your amps, assuming they're 1 ohm stable.