Not much you can do except wire them for a 2 or 8 ohm load if you use all 4 front speakers (2 left and 2 right). A 2 ohm load I think would be a better load and should be fine for any HU. So wire them them in parallel on each side.
2 8ohm speakers in parallel = 4ohm load
2 4ohm speakers in parallel = 2ohm load
2 2ohm speakers in parallel = blown amp