first of all there's no Long wheelbase in KDH series there's only Long wide( longer,wider and bit taller than the short wheel) which is called as KDH211
the KDH 211 DOESN'T come with a 2500CC engine it only comes with a 3000CC Turbo engine (1KD)
about the price, i don't think you can find a KDH211 for 62-65 cause now the price of these vans have gone up in Japan,
the price of KDH200( short wheel 2500cc) and KDH201(short wheel 3000cc turbo) have increased up to 62-65, see this
http://autolanka.com/Buy.asp?FormName=Search&FormAction=search&ad_type_id=&ad_category_id=&search=hiace