I think the main problem you would have would be generating enough exhaust gas to spin two turbos from a relatively small 1.8 litre engine.But if you used small enough exhaust housings and can rev it hard to generate enough gas to create good boost preassure it would be a very interesting project.I have seen a sr20 with twin TD06 turbos normally seen on gtr's and ive also seen a 2.2 litre honda prelude engine with twin TD04 wrx turbo's so I guess anyhtings possible good luck if you go through with it