91mazdarx7

hey i am about to get a autometer dual 2 1/16 gauge pod for my 89 t2 i have the sliding seat belts on the a pillar i heard 2 different things on if the gauge pod will fit or not i heard that it wont fit unless you cut some of the gauge pod then i heard that it will go in no problem which is it what do i need to do to fit the dual gauge pod in with automatic seatbelts please help i need answers asap