I was contemplating building one of these as well, cool subjects! As far as I can tell from my refs, these early Tigers should not have the triangular access plate on the engine deck. Unfortunately the CH Fehrmann kit I was going to use is a post March 43 build, so the cover is there. As for the Feifels...I'm thinking you can get away without mounting them. The pics I have seen, particularly of Das Reich Tigers, show tanks with the mounting lugs on the rear plate, but no Feifels attached. The rear grilles over the fans may have been mirrored on these early builds as well, but I would have to check my notes.