Have they determined they “burned up” due to the fuel eating the seals or other fuel specific causes or because people are just overworking them due to the increased amount of fuel needed? Either way getting an e85 compatible fuel pump for your all-motor build should be pretty easy as their are a lot of rather large flex fuel vehicles these days that could most likely be sourced for a fuel pump easily capable of feeding at least a 250 hp 2 liter set-up. Keeping a 600+ hp turbo car happy is a totally different ballpark