My son and I both raced cub cadets back at the formation of SOLTRA in 1999.The tractors had 1200 peerless transaxles with a side shaft input .A very strong transaxle,gears are good.Did not run lock up rear ends.These were on our first builds.After two years of racing,new designs where needed to keep pace with rest of the field.The 1200 was too heavy, and too hard to design a faster racer arround.Side shaft input too high on transaxle ,you have problems getting your seat low enough.You will also most likely have to run a jack shaft for your belts.Rear axles hard to replace,splined inside.We switched to peerless 600,which l still run.GOOD LUCK
B Alexander