This'll teach me for not looking.
I've just had a head done up off a wrecked '83 L300 4WD and after getting it back, (Very pleased with the job!) I've noticed that this thing has got a 4g62 engine in it.
Will this thing fit on my '86 4g63?
I'm having horrors about this and without pulling the head of my monster which needs to be on the road all the time, I'm not sure.
I've spoken to a few people here but so far have had nothing but conflicting reports.