I grabbed a fox box for my 22 ram 3500 and it recommended the 1750 smart amp and the classic 12” subs built for that box . I literally wanted no excuse for that s box not to hit , since it was built for these subs. The woofers did not even last a week from install and one of the coils sound busted already. What a disappointment. Every was tuned and scoped. Sad that I have to replace subs already . And don’t get me started on the first x box . I’ll do a separate review on fit-ment.