Hi new to the forum, retiring soon and want to get a bobcat for project I have not owned one in years. I found and old 731 that can be bought cheap as far as skid steers are concerned. If memory serves me well I thought 731's all had 2 cylinder air cooled diesel, but the 1 I found has 4 cylinder Wisconsin. Does anyone know if they built any 731's equipped this way or is this a repower during it's life. I guess the seller could be wrong about it being a 731 because of decals as I have not seen the identification plate. Thanks in advance.