I have a 4X4 GMT 400 truck that I’d like to Cummins swap. Does the installation of your motor mounts require modifying my frame?

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Category: Common Questions

Yes. There is an offset (raised) area at the bottom of both motor mount saddles that need to be trimmed off. You’ll also need to install countersunk bolts in the 3 uppermost differential case bolt holes. Some trimming of the differential case webbing is required as well.

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