I bought an Arrowhead kit last year. Not from them but off eBay. Not a bad piece but needed some CA to fill some pin holes. They have a FB site though and it looks like they list it. https://www.facebook.com/pg/arrowheadaluminum/shop/?ref=page_internal
Love the color combo! Nice paint work. I know where you're coming from with all of the open builds. I have that kit as well and its so tough not to get started building it. Must...resist.
Sad to hear that he's giving up, but I can understand not wanting to keep fighting. My brother died of leukemia at a young age and he refused treatment when he had a recurrence. My heart goes out to Harry and his family.