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  1. Shtbox69

    TBI harness swap?

    Hi guys. I have a 94 C1500 4.3/auto and Im swapping in a 90 305/5spd(cause it was cheap) for my daily. Is my best plan to keep the 94 harness and ecm, and buy the right memcal? ,,, or can I swap in the 305 harness and ecm. Not sure it would work with my dash, ect Thx in advance. Shtbox
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