i have to use ETs as the race regs dont allow changing the engine to a different type. Id say the ET sump is well up to the job. I can get 1.95G acceleration and not get surge
i have tried the DET oil pump into a bare ET block ages ago and it fits. You would then need to use the DET crank and oil pump (which you have), and either the DET sump (modify it to look like an ET one internally!) or modify an ET sump. I havent tried fitting a DET sump and oil pump into an ET, so its from memory/guess, but i reckon its the forward part around the oil pump thats different, so the ET one might not be easy to mod.
You will need to use the DET pickup with a DET pump too which is at a differnt angle (not central like the ET) so would foul the ET sump anyway.
Using the DETs crank brace is a good idea, certainly cheaper than the billet steel ones i had made (though not as nice
) but you need to cut/grind away near the front and rear corners to clear the ET sump, and even then a little little 'persuasion' with a no.5. 'Fu** stick' is needed to the sump corners (not enough to distort it though.
Personally it may be easier to buy a spare ET crank, bound to be someone on here with one or else let me know and i'll ask a few mates if they have any, and flog your good DET crank (pretty rare these days!) and oil pump to someone with an S13. That should fund the new ET oil pump and then no need to machine a bottom timing belt pulley or mod the sump etc.
Still worthwhile using a modified crank brace from a DET though, and DET main bearing cap bolts (longer than ET but same thread etc).
I think that modding the DET crank is a no go, as the nose diameter is a few millimeters different, not a few thou, and also i think you would need a new drive flat for the oil pump grinding too as i think its asmaller diameter.
If you need to know for definite, let me know, i have scrap DET and ET cranks
and oil pumps i could measure. You probably have to get the cranks re-surface hardened too or nitrided as the grinding process would eat through the cranks standard surface hardness, not worth the hassle or expense if you can find a good spare ET crank and buy a new ET oil pump.
Dont drill holes in the DET rods, it'll wreck them.
Will make a nice motor that'll be nice and strong when its finished, without the crap DET sump issues
EDIT: Will have a look for oil squirters but pretty sure i havent mate. someone on here or sxoc should have some though