the 41 business coupe has a few differences then the 4 pass cpe, the main one is the placemant of the fuel tank which in the bus.cpe is under the raised rear floor vs under the body of the 4pass, so you would have to modify that so the seat would fit correctly, as well as the safty factor of sitting on top of the fuel tank,the rear seat is also different then the sedans, the 4 pass, also has armrests which configure to the back seat as well, then there are the brackets that hold the seat in place, as well as the spacer that fits under the front of the seat seat. although nothing is impossibal the job will entail more the just placing the seat in the car. suggest you compare if possible both cars and their differences. hope this helps.dlz