The Elise seats will definitely fit in the Europa with plenty of room. While I had the seats out of my Elise, I decided to do a fit test of the seats in the Europa. As can be seen in the photo, the Elise seats are a little bit narrower, quite a bit taller and a bit less reclined. Somehow they don't quite look right in the Europa. As Brian stated, they ain't cheap. All the ones I've seen for sale were asking close to $1000/ pair. If you can find a pair really cheap locally, might be worth looking into.
I have a pair of TC seats sitting on my storage shelf that I will sell but shipping costs may be a bit more than what you may want to spend. The other option is a bolt together TC seat system that someone was selling a few years back. I don't plan on using it and may put it up for sale. RDEnt was selling the same seats a couple of years ago, no longer on their website.