G`day Brett ,
the pitch should be 0.5033 ,
if your new one is from island 4x4 it will be like what member POD got and is 0.5 pitch ( according to Ashcrofts ) and even if made fit are noisy ( according to others ) .
POD said he was fobed off by Island 4x4
Chain = 0.5033pitch x 2" wide x 74 pitches ( or 37 links )
Transfer = Type 1361
Morse = HV-049
They are USA fitted to UK vehicle a google will find in US

