The're  making 8's for the last 2 yrs I know of.  I was supprised how well it pulled. In the heavy ground (the stuff that weight 42 oz to the pound ;-) stuff) the 8410 had some traction problems but still would pull it 4mph&. (no rear weights) The 8520 in the pic is weighted with 2 1400#s on the rear & 2200# on the nose seems to have better traction.