The Kitty Hawk HH-60G kit is reviewed with sprue shots, instructions, etc. at Moxing.net. It is basically the same plastic as in the MH-60L kit, with a new, HH-60G specific G sprue.
HH-60G in-box review.So far it looks really nice. One note, the kit will not accurately build into a modern HH-60G. A small detail, but it is missing. The new G sprue has the older H-bar fast rope/rappel rig that the USAF used up to about 2000. After that, they changed to the FRIES rig that was only used by the US Army before that. The FRIES (Fast Rope Insertion and Extraction) rig is in the KH MH-60L kit on its G sprue.
USAF H-Bar rig, pre-2000-ish, as in the HH-60G kit.
FRIES rig, US Army and USAF post-2000-ish, as in the MH-60L kit.
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The remedy is to scratch-built the FRIES rig or contact Sofia at Kitty Hawk and they will sell the G sprue separately out of the MH kit w/the FRIES rig parts. I scratched one for my Academy MH-60L DAP. I used a piece of square stock and a couple pieces of rod. Some details for the attachment ends and straps and bolts to hold it all together. It wasn't too bad to do.