I notice that the 1978 400 is considered a follow-on to the 1977 400 in the MA MOMS (see 16.15.11.8(a) ). Can any-one remember a 1978 model 400? I also seem to remember that the poms were doing some great conversions in the mid-70's (I think Bickers was behind it), but I can't find any images or information. Any help out there?