I would not recommend a two-piece timing cover. They seal ok at first, but if you have to change cams they have a tendency to break the seal between the rear part and the block. I could not find a way to reseal mine. Ergo, oil leaks.

I took mine off and put a one-piece on. With a one-piece oil pan gasket, all you have to do is remove enough pan bolts to allow the oil pan to drop. Trim the sharp corners off the timing cover and slip it in. No leaks with a little care.