They are not the same at all. The 16v seats are good but the willys are better. I do prefer the pattern on mine than the willys pettern though. I know they are different as a mate with a valver brought some willys ones to replace the 16vs ones and they and he says they are worth upgrading to if you can find some.
About Retrims. I am considering it as a final thing for mine (just got to start the other things first). A mate had his done for his Max featured Saxo by a company in Sheffield called L4Leather, the job is superb and better than i have seen before apart from Carisma. I spoke to the geezer who owns L4Leather and he said it would be about £900 to £950 for a retrim.
For this u get:
*Lumber supports strengthend.
*Retrim in whatever colours and styles of leather.
*Seats, Doorcards, gear gaitor etc are trimmed.
They can even trim the roof, Dash, Boot install, Stearing wheel etc. Whatever you want done they can do.
Kev