I dont have any flow charts on these turbos but they will do better then 530s for power and spool close to a td05-16g setup and probably come with fairly close power as a td05 setup. Only a few weeks will tell though.
They are using the stock housings so no downpipe modifications are required ;-). And are going to cost under $2,000. I will get a better price quote as the turbos are dynoed and we find what other hardware might be required.