If you can find a local car breaker with an old replacement engine that doesn't look obviously past its sell - by date, that would probably be your cheapest option. (mechanics.stackexchange.com)
This OE Replacement Engine Splash Shield, Fender and Splash Shield Kit is all you need when doing a repair due to collision or when your old, worn out parts already gave up. (carparts.com)
BECK ARNLEY ENGINE TIMING COVER GASKET SET — A high quality, direct fit OE replacement engine timing cover gasket set. (carparts.com)