They won't bolt on, and unless you're well versed on the stress put on the bracketry to mount them, you might want to wait until someone makes a kit. That's not an area you want to experiment with.
How much are you getting the calipers for? Most that I have seen are selling for between $750 and $1000. Have you priced pads? Stock pads are around $275 - just for the fronts. Ferodo DS2500's are a deal at around $175. And then there's the rotors. The hub diameter is much larger than the Eclipse (only the wheel studs will be keeping them centered) and stock rotors go for around $500 a pair. The replacement rotors I will be putting on my car when I use up the stock ones are made bt Stasis - around $900 a pair. But at least they are a full floating design with replaceable disks, at $225 a pair.
For the money and time involved, a TCE big brake kit would probably be a better bet, unless you're getting the Evo calipers for nect to nothing. In that case if you decide you don't want them let me know. I'd like to pick up a spare set, but not for a grand.
Greg
'19 Genesis G70 3.3t AWD '88 Chrysler Conquest TSI