It says you have a 3" DP in your sig. For me the passengers side I was able to get the down pipe out of the way and get to the fitting. And the drivers side I haven't done but has a fitting that moves the connection to what looks like an accessible place. Assuming the leak is at the head connection since the viton sleeves do get soft over time.
I would pull the turbo, and replace the lift pump, the banjo bolt o-rings, and the seals at the head fittings, and the rubber hoses if it where me, just to prevent having to do this again in 10-15k, but i am ocd about that kind of stuff.
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