I tied into the intake right behind the drivers seat. I am sure you could remove the seat back and bottom and access both the fuel line vent and the intake. I think it would be a lot easier with the rack removed though. Unless you have a lot of mods attached you have to remove, it is done fairly quickly, only 8 bolts, with the help of an impact driver, mine comes off and back on again in about 5 mins. The most trouble I had was separating the brake light connector over the right fender well.
Bad picture, but I didn't tie into existing fuel vent. I removed factory vent and installed new vent line, (fuel line) with new hose clamp.
View attachment 21463