I've seen the aftermarket seats and it's clearly possible. I was looking at the rails on the stock seats but don't think so.
Didn't stop you from buying your car. As mentioned, just shim it and get appropriate bolts to compensate. This keeps things lite. Seems smart to me to use KISS principle instead of overcomplicating things like our German friends insist on doing to everything.I checked the exact same thing when I got my car. Answer was "no". Seems stupid to me and rather unfortunate. And Lotus wonders why people buying Porsche's instead.