Hi, I have a '49 Canadian gmc 1ton 9ft box. http://i49.photobucket.com/albums/f275/cepyelland/my%20GMC/picture3301.jpg I would like to replace my 216 with a 292cid engine. I want to keep the 6cyl look but have the torque and hp of a larger truck engine. Is it hard to do? Can I keep my 4spd trans? do I need the flywheel and clutch that fits the 292?. Currently my rear gears are 5.14:1? (as 45mph is about top end) with at least 4.11 if not 3.73 but I belive I will be under powered with the stock 216. And I don't want to throw a rod tring to go 50mph.