Ok, so my car was making a ticking sound. Sounded like a lifter so i replaced them and all gaskets etc. Knock is still there. Got a mechanics stethoscope and looked around, and its bottom end noise. Car still runs great its just a very light knock, loudest near the oil pan. So im running this car till it wont go anymore, which hopefully is soon. I have access to a NA 3800 block and bottom end, and a tuner. I also have access to a straight up L67 for $500. Would it be best to use the NA bottom end and pull a top swap off the L67? Or just drop the L67 in? Suggestions on cams? Anything you guys think I should know please tell me. I have a good amount of money to work with probably around 4 grand. So anything is a possibility.