maybe relevant to this discussion
Six conversion value for insurance?
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Hagerty Articles 2016
"Mecum offered a 914 upgraded to 2.2-liter six-cylinder power with 40mm Weber carburetors, Recaro seats, fender flares, Momo steering wheel and five-lug Fuchs alloy wheels at Houston in April. The trouble was that it wasn’t what it wanted to be – a 914/6. The bidders quit at $39,000, a telling contrast not only between real and make-believe 914/6s, but also the perils of spending vast amounts of money to make a 914 into a 914/6."
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914 & 914-6 parts FS 03-2021 
www.tinyurl.com/2pmpmv8y
911 parts FS 2022
https://tinyurl.com/911-Parts-FS-LCM