I have a 04 CTS luxury sport sedan that the 3.6 had lifter issues. I replaced them. Still have lifter issues. But now the timing is wrong. I know the 3.6 had oiling issues. My question is this, would it be better to replace it with another 3.6 or go for a V8 swap? I plan to get a loan to get it replaced or swapped. I don’t have a big enough garage to do the swap myself. Any help would be nice.