Td06sl2 20g 8cm is the ticket
its a well rounded package that doesn't struggle to max its compressor efficiency even on 98ron.
the L2 turbine is designed with the intention of high flow (we've seen up to 400kw from it) and making light work of turning a compressor. In the case of an SR it makes using a 420hp (20g) compressor have a good powerband within factory sorts of rev limits. On an RB25 the L2 helps make light work of a 25g wheel.
you can expect it will get urgent around 3, be all in at 4 and make an easy 260 on 98. Go E85 for about 300, as stated its fairly efficient so going the ethanol way doesn't unlock heaps like it can for others.
I hope that helps.