do what
you like , "desireable" is up to the beerholder ... many folks seem to think the big windows are preferable if they want to hot rod it, but many feel that the small window is more appropriate for a 'real' vintage truck .... $ value will be about the same if you're worried about resale, and that'll be something just less than what ya spent on it

look thru the gallery 5-9's and I think you'll find about equal numbers of each
Bill