Domes available for an R and D head

Got a buddy with an r and d girdled head setup for a 701 and racegas that I was wondering if domes we’re still available for it? I want to run it on a pump gas 760, and didn’t know if those domes could be recut for my application or the whole head shell is different and won’t work at all. Can’t find a ton of info on them and 760’s
Thanks
 

zox

Location
seattle
I have an R&D head on my Superjet when I got it it had one bad dome I called r&d and they sold me a set I think they were for the 1200 motor but fit in my head
 
If you read group k tech article about superjet racing mods, they mentioned that back then the 85mm bore girdled head was a special order item direct from r&d
 
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