Instead of the fuel line upgrade, why not just do a bigger fuel pump, fuel regulator and some larger injectors for .6 setup. Which would be 250ish, right?
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This may be the set up Mark is looking at.
I'm looking at something similair for the Prolex-UK turbo conversion.
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There are several turbos on the island. One is done by HKS Taiwan who does the this setup. However, the boost pressure can still be only somewhere around .6 bar due to the automatic transmission. What they did is upgrade the fuel pump and injector to 800CC. I don't believe there is a fuel regulator involved.