R type engines Nov 8, 2010 13:05:36 GMT -8 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by hiacecamper on Nov 8, 2010 13:05:36 GMT -8 Is it right that all R type engines are interchangable?If currently got a 12r engine and box in my 1976 Hiace and wanting to know if the 18r will bolt straight in?