Pickup on a few threads that the 7.5 rearend weighs 20-40# less then the 8.8. Debating on staying with the 7.5 since this is an SVO not a torquey v8. My concern is that I will not be able to run a MM PHB or TA. Have anyone installed these components onto the 7.5? I think the tube size differs from the 8.8?