Hi, all.  An oliver 550 with a loader and power stearing followed me home yesterday (6-28-11)  45-0069  132-925-519 (1963?)  loader#588  D10586 It has 5267 hours (at least) and she looks like she has had a hard life and I will need many parts.  I also have a lead on a non running oliver super 55  Are any of the parts interchangeable?  On my 550 the trans case is cracked on both sides about 3&quot; behind where it bolts to the engine. it has been brazed and cracked again and the new crack has about a 1/4 inch gap. The engine is frozen but the oil and water look good. (I hope it is just bound up and not broken)  So does anyone know if the trans case/parts and engine from the 55 will work in the 550?  Also are the PTO parts the same? It will be quite a project but I think she will do all of the work I need for many years when I am done.  Any help will be much appreciated.  Thanks, Jim