No power adders for me yet, but converted to EFI on The Charger and Coronet.
I bought a 2008 6.1L Gen III hemi with Nag 1 trans for $4K (with accessories, harness and stock computer.)
This is for a basket case '69 Coronet I bough that was an ex-bracket race car so it was pretty stripped when I got it, and has already been cut-up a bunch.
I was thinking of having the heads re-built with the Dura-Bond Killer-B valve seats and severe duty valves to handle the heat of turbo charging.

Not even sure when I'll get around to messing with that project. After I got the GEN III engine/trans, a '73 Jensen Interceptor came up for sale at a price I couldn't pass up, so now I have another project car that I can drive while working on it.