The 0.48 housings don't seem to let go, I had one on my Sapphire that made 385bhp and 403lb ft (did 172mph) and was thrashed to fuck EVERYWHERE for a good couple of years. As soon as I went to a 0.63 a/r, that was when I had to have a new turbo every 3-4 months .

I suspect that if it is running that kind of power, that the compression ratio starts with an eight .

That will be an absolutely amazing road engine and you will have loads of fun - if it is 2wd - BE CAREFUL !