I believe there are some decidedly non-standard Tucanos for sale somewhere; non standard because they weren't built by Embraer.
That happened a lot to Helio Couriers during the 1960/1970s. The CIA et al built lots of unattributable airframes from spare parts.
https://1000aircraftphotos.com/Contr...rkins/9946.htm
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At about this time General Aircraft decided to take legal action against the US Central Intelligence Agency (CIA) on the grounds that they had brought about the company's financial downfall through a scheme to manufacture copies of the Courier without Helio's permission. It seems probable that a significant number of other aircraft were built from spare parts and through the engineering resources of the CIA-sponsored Air Asia.....