I'm not aware of any CL - the engine has a long history in the Patrol where it was a bit problematic and known for blowing pistons, but that was sorted with a factory mod just before they deployed it in the T2 (no known occurrences since then). The rest is all standard MkIV T2, no other changes, so you know it inside out.
Check somewhere like parkers.com for more info. :thumbs