Differences Between WX engine and WR

[Iain Atkinson]

Hi all

can anyone tell me what the differences are between these 2 engines, i know
that the block etc is the same and that WX engines went to the states and
switzerland, but is there any difference in the head and cam for instance,
valve sizes???? I presume that the WX with 162 bhp was because of cat
converters and other emmision stuff???


TIA



Iain