A remote mount turbo kit for the hemi would be easily adaptable to the 4.7L
Lately I've been thinking of turbocharging my 4.7L as well. I believe you could do about 6-8psi reliably and safely. The 4.7L is a very strong engine, I don't think it'd have any issues handling boost.
I just can't stand to drop $5k on a turbo kit that would need modified to work. If I do it I'd do it from scratch and shoot for $2-3k. Should be doable. Should end up around 450-500hp too(at least for the 2008+ 4.7L). Maybe 400-450hp for the older 4.7L.