I purchased one recently from Rimmer
https://rimmerbros.com/Item--i-GRID800036There are a few that fit your year, I think there is a differance with the 'nose' the bit that the pulley fits onto
While my +8 is a 3.9 the pump is as described for a 4.0 as mine has the serpentine belt
do you still have a 3.5 engine ?