HI THERE KKK K26 TURBO ;I WORK FOR A FLEET SERVICE AND A COMPANY THAT SELL PROPANE HAS 2 OF THESE @#$###@ TRUCKS. EVERY THING IS TROUBLE .I JUST WHENT THOUGH TURBO PROBLEMS FROM WHAT I HAVE FOUND OUT .THAT MOST OF THESE 3.8 DETROITS THE K 16 IS THE MOST COMMON HOWEVER THE K26 WAS AN POWER OPOINT TO MAKE IT WORK YOU WILL HAVE TO HAVE INTAKE EXHAUST TO MATCH THE K26. HOPE THIS WILL HELP YOU. ANY QUESTIONS FEEL FREE TO EMAIL ME !!!