I just got me a walthers trainline F40PH and i have a couple of questions on detail parts. first, the picture. (it's kinda large) what i need are air conditionerds like the ones on the roof. does anyone make these in HO scale? also, i was wondering if anyone made a pilot like the one on this loco. i seem to recall seing one, but i cant remember where. the walthers model just happens to be unit number 175, and i cant find pictures of that one. so i am guessing on the parts based on all the other ones they have pictures of.