I'm looking at the HH-3 and thinking that a conversion from an SH-3 is possible in 48th. It'd take two kits, but I think its doable. I'm really considering this, since I can use the second kit as the basis for my S-67/AH-3 (transmission and engine compartment, rotors, etc.)
I just shot a brief walkaround of the HH-3E at Hurlburt Field this past weekend. Here's some pics.
Later,
Jon