Dodge dakota infinity replacment speakers?

I went to (Dont Laugh) Walmart. In the auto department they have some
very nice ones. HD by Scosche. Tri axial style. I had to mount a little different
than the orignals. Don't think they were more than $45.00 a pair. Big watt
and the sound great. Can really blast them. I think the ohm rating on the
factory and the replacements were 4 ohm.