Is there any major difference in the cab design of the Grand L 30 series and the new 40 series. Are there any replaceable or cleanable air intake filters on the cabs??
I have the 3430 Grand L Cab and it does have a removeable cleanable and replaceable fresh air intake filter located at the rear of the cab roof.
The newer 40 series I think has more head room (slightly taller cab) and a little more fancy design inside the cab. Somewhere on this forum I read what all the differences were. You might try using the search option.