Paul,
What are you looking to swap over? There are many things that will fit into the SC. Now what parts are a "direct swap", and what requires some work...I know that body panels are different. Most everything else can be swapped into the SC. Some requires more work than others, but there is a LOT that can be swapped. For instance, the entire interior can be swapped in (has been done before but requires work). The engine can be swapped (has been done before, but requires work). The IRS is close to being identical (airbags and the LCA's being different).
Someone feel free to correct me where I'm wrong.