With the oil baffling complete, it is bolted into the oil pan. It's important to make sure that the clearances to the bottom of the pan have not been affected by weld distortion and that the trap doors swing freely. Once this test fit is complete and everything works as intended, the bolts are removed and reinstalled with some Loctite applied to the threads. Generally hardware inside of an engine should be avoided (one of the reasons the new baffling was welded in), but sometimes this is not easily achieved and we have to make do.
Extending the oil pick up tube is the final step to completing the modifications necessary to use this oil pan. Once this is done the O-ring is installed in the pan in conjunction with a little bit of gasket maker and the pan is bolted to the engine. The gasket maker helps hold the O-ring in place while the oil pan is installed and gives a little extra sealing capability.