I have their oil sump on my EJ20TT, ground clearance isn't a problem anymore, it holds the same amount of oil as stock (from what I've read on the forums) and it's a good fit.
A big + for US buyers is that the owner of bugat5speed communicates very well in Englis. Mine took just over a week from ordering to arriving in Belgium.
Only negative thing I have to say about is that the screw that keeps all the oil in isn't included and I had to find one that fitted( not a big deal but in a kit like that it should be included since it isn't the same size as stock)