I have graphs for Three cars that run these Turbo's we are talking about,

One is on a FRST 1900cvh 803's T34. He has 296bhp & 295lbft
He would make more power with a smaller Turbo and zorst Housing


One is a ERST 1600cvh T35-48a/r 803'2 & leaking valve seats 275bhp 265lbft

One is a FRST 1800zvh 803's T35-63a/r = 260bhp & 245lbft
He would also make more power with a smaller zorst housing

Some of the graphs can be found here

http://members.lycos.co.uk/oddkidd/forum