are you POSITIVE thats a 505TD pump?
because its 100% different than mine.. it should have a 10mm plunger.. and a red handle on the mechanical shut-off.
everything about that pump is wrong to lead me to believe its a Pug 505 pump..
every 505 ive ever seen, had the same pump.. even the autos and manuals had the same pump, just with a couple different brackets..
im leaning towards that being a renault/jeep injection pump actually, not a 505TD
this is a 505TD auto pump..
anyways, that 3rd set of numbers
0 460
494 159
the 9 is the plunger size..
and your ECO pump is only an 8mm plunger.. the LDA really wont even do much on an 8mm pump.. plus, you will have to deal with the max fuel limiter pin in the side of the pump body also.. the LDA will do NOTHING with that pin still in the side of the pump..
if it were me, i would fit that LDA to a modified n/a pump, or just buy a REAL TD pump..
sorry, but that pump you got, isnt what you were told it is.. i DO KNOW that for a fact.. its not a peugeot pump at all, let alone a 505TD pump..