engine swap

[H B3000]

I have a 2001 D/S B3000 a/t can a 4000 be swaped out without a lot of prob. ?

[BlackBII]

I think the bellhousing has different patterns, not sure though, something to find out. Also, the entire harness and computer may need to be swapped also....

[Mutant Pony]

Yup, Bell housing, torque converter, ECA, engine harness.
Not worth the 5 h.p. if you ask me. A set of roller rockers or a chip would be much easier.