M2 180bu Grain tank 6620 166bu M2 Fuel tank cap 74gal 6620 82 gal M2 Engine HP 130hp 6620 120hp M2 Drive tread 130in 6620 120in M2 Steering tread 115in 6620 107in M2 Base Weight 15088n 6620 15961n M2 length 266in 6620 313in M2 Height 139in 6620 156in M2 Wheelbase 123in 6620 145in M2 5 fwd sp, Tran 6620 4 fwd sp. M2 Sep Area 9964sqin 6620 Not Avail. M2 total cleaning 5252sqin 6620 4478sqin This are direct specs from 1981. Hope this helps!