You can check out E85Performance.net to get your answers. Basically, use newer Teflon lined fuel lines; there is something about paper fuel filters, larger injectors and a larger fuel pump. The great thing I have found after using it for years on my 2006 GTO is that the insides of the engine, like the combustion chambers, stay very clean. I recently pulled my heads after 4,000 miles and found zero carbon on the pistons and valves. Pre E85 combustion chambers had a layer of carbon.
You can follow the below link to a September 2009 Popular Hot Rodding article about converting. While there is a focus on carburetors, information is included for fuel lines, pumps, etc.
http://www.popularhotrodding.com/tec...e85/index.html