65 Dart Wagon Conversion to a Sedan Delivery

I didn’t really notice it when fitting the seats, but now I notice that the back of both seats are different heights. The passenger seat is from a 66 Dart with stock brackets that bolt to the seat and floor. The driver’s seat is bolted to a power rack from a 68 C Body wagon. Would you do what’s needed to raise the rear of the passenger seat to match the level of the driver’s seat?
If it was possible yes! Is is possible to re-arrange the seat brackets so you will get a correct height of the seats or do you need to make changes in the floor?