Hi. Friend's 3406c cam got wrecked because the lifter keeper broke and lifter turned sideways in the bore. We are going to try and tackle it ourselves and I'm wondering if there is anything we can do as far as an upgrade since we are buying a new cam anyway. Would a B model cam be better? The rest of the engine is all stock. It's a 8pn serial number, has about 10000 miles on new jugs, pistons and bearings. Another thing, we pulled the front cover off and some of the front timing gears are aftermarket and the compressor gear's got some play. Would you guys recommend putting all OEM timing gears back in or what? The truck was a repo that he bought really cheap so he figured he would have to stick some money into it. Thanks, and keep up the good work fellas. Your help is MUCH appreciated.