Gears for Howard Rotovator Series P

[Little Farmer]

I am looking for an idler gear (part #61059) and a Jack Shaft Gear (part #61037) for a Series P Howard Rotovator (machine no. P1448). It is a 40 inch offset. Also need a gear case (part #67486). My understanding is that this series has not been manufacturer since 1976. I am interested in new or good used parts. Would be consider buying parts machine. Help.