Sleeping across a Familia and a Triton the bed is just about 6ft 2ins and always has been
Most Trolls up to 2010 were the same width, but in that year they were widened by 4ins to 6ft 6ins. There were a few wider Trolls before that, mostly in the 55X range of numbered layouts.
The 'langslaaper' vans with long rear lounge benches which can be 6ft 5ins single beds or a similar length double are the following models:
Triton 410 - no washroom, with front dinette/3rd berth
Triton 420 - with washroom but no front dinette/3rd berth
Troll 540 - with washroom and front dinette/3rd berth
Troll 542 - with washroom, front dinette/3rd berth, rear double bed is fixed
Of these the first three have been available for decades, the 542 only in the last few years.