metric impalas

[texas pride]

will metric impala lowers fit a metric chassis and are they longer than metric lowers

[stillfast]

No, they will not bolt on. The mounting width is different. They are longer. The only stock lower that will bolt on is the rear steer Nova-Camaro lower.

Impala 71-96 (big GM)
Camaro 70-81 (Firebird)
Chevelle 73-77 (mid size Regal-Cutlass-Lemans)
Ford Crown Vic 79-02 (rwd big Lincoln-Merc)
These model all share the same mounting width. The Impala-Camaro-mid size Chevelle are all identical lowers. The Fords are about an inch longer.