I have looked throught all the faq's and done my best to figure out the engine I have, but I cannot find a matching number. The only numbers I can find on the block are K19 and LAQ9676. I know from patricks catalog that the K19 number would mean that it is a 49' or 59', but I can't find any corresponding numbers. It also has 2 bolts studs through the valve cover, but the pushrod cover doesn't cover the plugs? Any help would be much appriciated.