I'm going to switch my PCM over to the 0411 unit from a 01 GMC Savanah van instead of the black box that's currently in my truck. I'll have to have the VIN from my truck put in, axle ratio and tire size changed and some other items. I've got my schematics for the transferred wiring portion of it. I'll get someone with EFI Live, Tech II or HP Tuners to do the changes for me as the base tune for the v8 is already there as well as the tables for the 4L60e trans. I'm going to try and locate a tuning suite and do the work myself or pay to have it done. The 0411 PCM is a lot faster and more tunable unit than the PCM currently used in my truck and is used in the later model S10 as well as other trucks/vans. The Vortec engine employs a spider setup that uses poppet valves, one for each port but they have their problems and are not a good reliable system. I want something that I can change injector size on easily and doesn't have the issues the poppet system has, plus I like the look of the external injectors. I'll reuse my 4.3 fuel injection harness, re-pin for the injectors and add the two additional wires for the v8 that the v6 doesn't have and add two hot wires for the injectors. The only thing extra you have to do is remove the spider injector connector and re-terminate/splice in regular injector connectors that match the injector you are using in the TPI setup. I used intrepid fans also. I should be able to have a segment swap from a Camaro put in to control them also. While I'm in there I'll add the tow/haul option also if it's missing since it's an alternate table for the transmission that changes line pressure and shift points.