Hi guys, have attached some pics of what was included in my kit - hopefully you shed some light on the year for me
Yours is identical to one of mine; a '73/'74 body with '72 chrome. What makes the body a '73-4 is the smooth roof. An accurate '71-2 body has T-top-like creases pressed into it (Google some pics and you'll see what I mean). The original Johan '71-2 annuals had the creases molded in.
I wouldn't be bothered by the minor inaccuracy. I purchased mine from a long-time knowledgeable collector who bought and built the kit years ago without ever noticing the error.