Hey evom member , how are you guys doing , I blew my evo 9 motor a few months back and now finally have guns to build it . I had a huge amount of parts in my oil pan , consisting of parts of rods and piston . My question is? Can I just clean out my old oil pan and reuse or buy a new one . Same with oil filter housing and oil cooler . I don't want to build and spend a fortune on it and it blow up due to something I can prevent . Please chime in and help out . Thanks guys

pan and filter housing yah probably with very good cleaning, but a big no on the oil cooler.

Seems like you already know the answer. Do not reuse the oil cooler.

Never never never reuse an oil cooler. You will never clear out a cooler of metal.

Clean the pan
Replace the oil cooler