Lu,
I've never flown a 214, but several friends who have told me the only difference between a 214 and a 214B is a limitation change to a max gross weight of 12,500 lbs. in the case of the 214B. This to avoid the requirement for a type rating and a two-man crew. No mechanical difference between the two types.
If this is duff info, I've been had by the best!