The problem with most aftermarket 6.75s is they're too deep and the Chrysler adapters generally work with 6.5" speakers, not 6.75" speakers. Chrysler speakers, even the Infinity ones, use a 3 screw mounting pattern. Aftermarket speakers mostly use a 4 screw mounting pattern. No aftermarket speaker bolts up directly without an adapter.
97 ZJ - 5.2L, 242, 4" IRO lift w/short arms & adj. TBs, JKS Discos/BPEs, DT3000s, Aussie'd 44A, sliders, OEM skids/hooks/hitch, 31" Duratracs on 15x8s
14 JKU Sport S - Stock