if you are a bit handy i still might be able to help you...
we have 2 seats standing here: 1 driver and 1 passenger side. The driver side is made in the same cloth as yours, of the passenger side the middle is piece is the same type of cloth but in a diffrent colourscheme (grey, blue and yellow in stead of grey red and black). Maybe you can use the outer pieces of the passenger seat and stich in the center piece of the driver seat? I hope you understand what i mean