Price varies, depending on what else you have done. I added a FAST 90mm manifold, LS2 tb, ported AFR 205 heads, Harlan Sharp roller rockers (stock ratio), 228/232 114 +4 cam, and thermal-coated LG Pros w/ hi-flow cats. Of course, the entire rotating assembly is forged as well. This is a completely new LS2 short block with a 4" stroke. When I compared the price (installed and tuned) to a polished maggie and MCM hood, it was very close.
If you re-use your LS6 manifold/tb and substitute something like Patriot heads in the stroker, or use a lesser grade hood and non-polished maggie for the blower configuration, you can do it for under 10K complete. Either way, you can't go wrong.