You have to be really careful about this kind of thing nowadays. If they're not an exact match (bolt holes etc) you risk invalidating your type approval, your insurance, or both! I can remember drilling extra holes in the cab floor of an old Transit, so I could fit more comfortable seats, and using big washers for reinforcement. I was satisfied they were as solid as the originals, but I wouldn't risk it nowadays!
But there may be something out there that's a straight swap fit. Best of luck!