I installed mine on a 08 Rev3 yesterday, it has the new carb so I don't know if it will help you but I put the 'T' 1.5" in front of the filter. I kept the old fuel line straight through the 'T' to keep the original routing and brought the new line into the 90 degrees junction. I then removed the right cover from the fender (not sure if the 05 has the removeable covers) and routed the line up through it.
Also not sure if I mated the screws with the bolts correctly but I just put the longest screw with the longest bolt (shock), and the shortest screw with the shortest bolt. I can't remember which bolt I put on the right side but it sticks out the required 1-2mm so I think it is right. I didn't use any of the shims/washers
I've only ridden it around the yard but the seat is more comfortable than my original seat on my KTM SX.
