Printer head compatabilty?

is there anyone who would know if the “new” printer heads from the p8000 or p9000 printers could be used in the 9900 0r 7900 series, and if not , why? if anyone has an answer with technical data or experience with this please let us know, epson in canada will not allow a printer older that 7 years to get a “new” epson head. therefore no service. and on this note, ANYONE try the ALIBABA print heads that sell dirt cheap?? has there been anyone brave enough to try one?

Yes they can be. Same heads. Same SKU and serial #.

best
-Walker

thank you very much, any knowledge on the alibaba heads that i see going for as low as 450. can