Well I wish I would've paid more attention reading Slopoke's post when he installed the 2860R kit from ATP.
"On the subject of ATP, I was there yesterday to get some vacuum hose and I informed them of the biggest gripes of their kits and recommended that they provide the 3" to 2.75" insert, one 3" silicone coupler and one 3" beaded aluminum coupler with their kits. They thanked me for the feedback and said they'll look into it. Hopefully they add those things, because everyone that's installed one had to either get a elbow with long legs or add a coupler to the compressor outlet to connect it to the crossover pipe."
Shop called this morning as they're buttoning things up saying that the crossover doesn't meet the turbo inlet. They had some 2.75" stainless that's not beaded. Sliced the silicone, stuck a bit of stainless piping in, and clamped it to bridge the gap. Probably OK not being beaded since it's not under boost, but will disassemble it when I get the car back and figure out what to get to make it fit perfectly.