I have a 94 F150 with a 351w. I know its a roller motor and all but I am swaping the motor for a different "older" 351w due to issues. Anyway the older one has the "V" pulley set up and mine has the serpenitne belt setup. What I need to know is the any balancing issues with switching to the serpentine belt setup. I guess the real Question is are they both balanced the same way and will changing setups throw the motor off balance..so thanks for any feedback