i thought between the '24 and '25 there were alot of changes and most parts were not interchangable. Alot of changes fromt the '23 and '24 also.
I have both the B7 and '24 xb2 and like them both. i actually ran identical times this past weekend in two different heat races. Time was less than one second. High 96 and 97 consistancy as well. I think it is just preference.