Moving the seats back will be the first thing that I do on mine. I hope they haven’t welded the holes up, I doubt they will as this will be something that would have to be done by hand. My bet is that they will just be plugged with bolts. I did contemplate leaving them as they are but having sat in the back with the driving seat adjusted to my position there is not enough legroom in the back for even my 12 year old daughter. If they have welded the holes I’ll drill and tap them.