Coming up pete i just sent 3 papers to nate to post marti invoice build sheet and the blueish green order sheet as this car had pink and greenish and 1 is 69 then 70 look at ink stamped dates nov 69 not on greenish also note Big Tires wrote out in lh bottom SPECIAL instructions as this car was built end of march and got the big suspension XHD F-60-15 option. Remember in shelby meetings letters (50 or so 69 shelbys were to get the big 69 boss 302 type suspension in late march). So even thou the paperwork didnt always mention this new option as ford probly didnt know what to call it or how much it would cost yet it started showing up late march and onto the end of 69 shelby production. 481871 is first car showing up in registry with F-60-15 on paperwork but we know how serial #s were assigned had nothing to do with what order the cars were assembled on the line and in groups or when ordered etc. I have documented several late march shelbys that had the XHD F-60-15 tire suspension but wasnt on the invoice. You have to look at the spindle ID #s and rotors ,tie rods ,draglink, strutrods ,upper control arms,etc.