I have seen the s/c 55 engines selling for $10-15K. Putting it in would be the same challenges I am facing with the CL500 engine. I have seen some nice supercharger kits for the 5.0 that will match or surpass the stock 55 s/c'd engine. When you are looking at this kind of swap, it doesn't really matter if you are starting with a Limited, Base or SRT.