Forum Discussion
SoCalDesertRid1
Nov 21, 2013Explorer II
It may be less expensive to swap in a 7.3 and ZF 6-speed, from a '99-'03 truck, than to do the Cummins swap. The 7.3/6-speed swap should be much easier, with no custom parts or adapters involved, since it was all factory stuff pre-'04 and the '99-'03 trucks are the same as the '04's, less the 6.0 and 5R110.
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