Specifically what year?
On the 95-97, you MUST use the retractor assembly from the location it was designed for (LF to LF only, RF to RF only). That being said, the actual BELT can be moved from a RF to a LF if you remove it from the retractor.
On my 96 LC and on the 97 LX that I got an extra set of belts from, the PS (RF) belt is about 9" LONGER than the DS (LF), so I gave the retractor one extra turn (should have done two) to retract the extra length. The LF retractor is not as big as the RF, so the new belt fills it TIGHT.
The 91-92 trucks are unique to their years for the buckle and the retractors.
The 93-94, I don't know.
The 95-97 have location specific retractors. The second row belts have a different buckle and are way short. The third row belts will work, have a different, but usable buckle, but are 6" SHORTER than the front row belts. I did that first, then discovered I could no longer reach the glove box due to the belt not being long enough. That's when I switched with the PS front.