As others have already said in effect, the T8-F puts the pilot in the space previously utilized for two people, so yes they are roomy at least in the front seat. I've never sat in the observers location.
The plane in the Trade-A-Plane advert sat in a hangar at KSEE for a long time, like 10 years, before being sold to the current owner and flown to its current location. The story was that an inexperienced tailwheel pilot under instruction ground looped it in a fairly minor way and then put it away, claiming all the while that the incident was caused by a broken tailwheel spring (IIRC) but never flying it after repair regardless. I saw it fly away when it finally did.