It looks pretty easy to build a turbo kit for a 4cyl Dak. Plenty of room for stuff. Hardest thing would be making a manifold, get the flange for the head and a garrett style turbo and some 1.5" mandrel bends and weld everything up. 1.5" primary tubing is small but you want to keep the exhaust velocity high to spin that turbo quick. pick up a 10:1 FMU and a vortech inline pump activated with a hobb switch, bigger injectors, 3" mandrel bends, silicone couplers, intercooler, 1/8" NPT tee -4 fitting and line, return hose and hit up the junkyard for a turbo from a 2.3L Ford and you should have just about everything to turbo your truck.