VX KAT 
Got 2 Crosby 3/4" shackles today, it fits on the rear eyelet, me likey!
but can't fit it on the front two holes (well, actually I only tried the front driver side). Not enough space width-wise down there to get pin open far enough to slip it through hole, it's at a slight angle. Tried it both ways too.
I might be able to get the next size down 5/8" on which is only 3.25 ton......so Billy how the heck did you get a 3/4" in let alone a 1" on there....the BFH method? I'm not sure I want to beat on the metal thing there...
