The solution for fuel that I have tested at E48 (50% E85/50% E10 91 octane) is the dual in tank fuel pump solution I have available with a fuel pressure regulator feeding the stock DI pump and injectors. The car worked great with this solution.
I can source all of the parts for you guys if you wish, right now you'll have to tap into the factory harness to feed the relays and use the factory fuel line as a return line.
I'm waiting for a returnless solution that would bolt in place easily, just waiting for Squash to finish their Uber Fueler.
That's 575 on pump gas for you guys doing the math, easy, peasy.
Solution under $1000 and will easily provide enough fuel to do what you want without meth.
So kudos to LMS but I have a solution already that has been tested in depth on my vehicle with big turbos.