right, so, wasn't really happy with the standard RB26 cast elbows - they're a worse design than the standard S13 elbow by a long stretch - they very badly block wastegate flow.
didn't fancy the twin tube chinese ones on ebay purely due to the lack of provision for attaching the standard heatshields..
found some R34 OEM steel ones on ebay and got them for very good money.. £59 incl. delivery![]()
they're still not perfect for flow but a good compromise between space/heat/flow/price and should be pretty robust.