Ouch front seats .......advice

After having a Picasso and berlingo both let me down badly my dad has given me his trusty 01 reg fabia estate 19sdi.......198,000 + miles and going well. The only thing I'm having trouble with is the front seats, so I'm wondering would the seats from a p reg 1.3 polo fit.....( just my mom may be getting rid of her polo soon)I have read somewhere that polo seats may fit not not sure which model.

Also, Is it a straight foward job to do? Going to try some different cushions.

Any other advice on how to make them more comfortable? It's just for some reason the seat seams to aggregate my left thigh.
Cheers