[urq] G54 slider pins: all the same ?

[Louis-Alain Richard]

Hi all,

Thanks to Eric's upgrade to G60s, I am planning to install his G54s (one
piece steel only calipers) in place of my two-pieces calipers (with
broken bleeders....). I have also the corresponding carriers. However,
one of them is missing a slider pin. I digged into my used parts supply,
(which is now impressive...) and all I can find is the pins from the
rear calipers, but unfortunately they are bigger. My FLAPS doesn't carry
the front pins, neither Audi. 

Before I remove the wheels, anyone knows if they are the same for both
versions of the front calipers ?

BTW,  the bleeders on Eric's steel bodied calipers were rusted in, but
careful heating with an oxy-propane torch proved enough for removal.
Now, what stuff can prevent rust ? I am thinking of Kleen-flo Silicone
slider lube, but there may be a better stuff. 

Thanks in advance,

Louis-Alain