need help on finding a part

[JCMIRAL]

i have been looking for a stock 3sgte celica exaust manifold but can't seem to find one on the net could someone at least give me an up to date part number

[ChuckD]

Prod. P/n
10/89-10/91....... 17141-88381
10/91-9/93........ 17141-88382

[tolik1980]

where can i order lower engine cover ?
or can somebody show me the picture how the engine should look like from below .
Cauz my engine is really dirty and some rollers make strange sounds
i think this is due to missing lower cover.