I'm not sure about any businesses that specialize in the swap, but I do know Holley recently released a kit to swap a Gen 3 Hemi into a Dakota. They have the necessary relocation brackets, ECU, guage cluster or digital dash, and Hooker headers all purpose designed for the swap. The ECU even manages variable intake runner on the new Eagle engines. Plus has built in provisioning for boost or nitrous. It can also manage the 46RE transmissions if you happen to have an R/T. I'll link it below.