trying to find out the history of 2 griffs

[byron]

hi am trying to trace the history of two griffs 1 griffith 500 met blue L229 SHK or B17 LOW and 2 griffith
4.3 K464 FEC or CD 373 met green i would be pleased to hear of anybody who knew of or have owned either particularly the 4.3 as it has mods i think for track days
cheers byron