Cool, thanks for the extra info guys, really appreciated. I've spotted an S2 wagon at a wreckers with a disc rear end, 'spose I'd better confirm whether it's an auto or manual, suspect it's an auto.
What gets me is these pick a part type places wanna change me 150 for a drum rear end and 170 for a disc rear end, I thought about doing a shifty and converting a drum rear end to disc while I'm there, sounds fair enough to me
So I take it the easiest way to spot the difference between the two, is counting the bolts holding the centre in, 8 as opposed to 10 for the H190, anyway of externally determining the ratio? or do I need to "go in" and count teeth.
My next thoughts are, Is it worth the effort converting a sedan diff, cutting off original mounts and welding new spring pads would be all that's needed, wouldn't it? are the wagons wider than sedans?
Tailshaft, better figure out if that needs cutting and shutting.
All this is eating into funds I'd rather be spending on some of datsports blower bits.