go with the con-ofe the o isnt stong enough and i got mine from piers diesel reseach here they are nobody could touch their prices when i was shopping around. http://www.piersdiesel.com/FordUSPrice.htm
so i have found that the wires in the plug were uninsulated for about 3/4" outside of the plug and when installed they were twisted together i also found that the piston in the IPR was seized in the open position. ithink i found my problems. now to find a turbo that will survive.
you could always get 350s in the 99 on up with the dana 60 if you had the sow plow prep package you didnt have to have the brackets or the plow but what you got was a dana 60 and heavier front springs