Hello Thxs for letting me join the Gbody community!! I have a 84 gmc caballero and I took the 3.8 v6 out and going with a sbc 400!! I was told the engine wire harness on the firewall bulkhead changes because of the v8!! I can’t find a new bulkhead engine harness for the v8 no we’re!! Can someone please help me because I’m stuck!! Thxs in advance