Those are alpine type r's they come in 10 and 12 inch also there are two different coil types Dual 4 ohm and Dual 2 ohm. Depending on the amp you go with we can tell you which model to get.
A better amp will be 1 ohm stable however the well built ones can be pricey. You can go with a 2 ohm final load from the subs to the amp and might save you a bit of money.
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