My boss bought an 88 3.0 automatic and put it into a 91 p.u. over a year ago. He wants me to hook it up and get it running for him. Can anyone give me any advice on what intake to use. The 91 has a manuel tranny. There are a few other things that dont match the wiring harness like the injectors whitch I have already swaped to make them adapt. Actually its the Plenium that I am wondering whitch on to use. Can I hook up an automatic Plenium on to a manuel truck. Any help would be great. Thanks.