I've had my Red on since Sept and couldn't be happier.
I had Tobz do an E85 tune. He recommended RC 1200cc Inj's and a Double Pump. I went with the Buschur, but in hind-sight, I would weigh the advantages of the new "Full Race" Double Pump housing.
If you return the Original Fuel Pump Assembly for $150 core credit to Buscher or AWDMotorSports, then the Buschur is cheaper by about $150.
But, if (like me), you decide to hang on to the Stock Fuel Pump Assembly
(... I dunno .... for good luck ???)
Then the Full Race becomes a very attractive option ... and it's real purdy too :-D