those e-rod crate motors are the greatest thing for the hotrodding industry for the non-motor building crowd. i'm thinking that they are gm's response to the popularity of the ramjet 350 and 502 crate motors. i have the ramjet 350 in my truk. it came with everything needed to transplant into my 58; pan, valve covers, complete wire harness, plugs, oil filter and even an air cleaner. i only had to add motor mounts, a starter, front end accessories and power to it.
any shop that can swap an ls type motor should be able to this. due to the newness of the e-rod motor i think you would find it difficult to find any shop with experience on this particular motor. the e-rod motors are stand alone motors that is; it comes with it's own computer and will run in anything, even a motor stand.
as for smog, they come with cats and o2 sensors. gm worked with sema to design a 50 state smog compliant motor. from summit:
GM Performance has worked closely with the California Air Resources Board (CARB) to secure emissions approval for these high-horsepower, high performance engines. These GM Performance LS3 6.2L E-Rod crate engines are the first crate engines of their kind to be certified 50-state emissions compliant. With their stunning combination of horsepower and efficiency, these GM Performance LS3 E-Rod crate engines are perfect for the race track or just cruising around town in your street rod or musclecar.