RARE 340 wedge car???

well the car is finally home I am now the 2nd owner COOL... check out the grease marks, also the dealer sticker on the rear "jim lash" im going to see if he is still around does anybody have any info on this dealership.....also anyone know wut the grease marks mean "W" "3" "4" does anyone know,, the duster has a carter thermoquad number on top 2080 is that the 850cfm double pumper thanks