SawTroll
Information Collector
Depends on what year. But the 61,266,268,272 are the same chassis. But in the later years they introduced an intake boot amongst other changes.
There were lots of changes, but basically the same - and you left out the original, that was the 162, in 1975.
This has nothing to do with the 262 though, that was developed on the smaller 154/254 platform, that appeared in 1983.