Coyote Gen2 Cooling System Hoses for use with Moroso/Mishimoto expansion tank

[dbo_texas]

I'm having a tough time finding 2 of the stock Mustang GT hoses that many folks here on the forum have used for plumbing the OEM Ford cooling setup (form 2015 Mustang GT). Full list of parts needed is at the bottom (thanks to EdwardB & several others for figuring this out!).

FR3Z-8C289-B - part seems to be obsolete out of stock everywhere --> replacement FR3Z-8C289-C also seems to be out of stock. Any leads on where one could get this part? I've ordered from 3 or 4 major auto supply sites, and then the next day I get an order cancellation notice saying this part is out of stock and there is no ETA. Can this hose be built DIY style? Does it use special connectors or just barb connections? If just barb connections, can anyone tell me the hose ID and length I would need to make my own? Or does it use special connectors on the end? I can't find any specs for this hose (highlighted yellow).
https://thefactoryfiveforum.com/attachment.php?attachmentid=177735&d=1672950075

FR3Z-8276-B - part is no longer available. I'm less worried about this one, as several have built their own version DIY style, using 3/8 ID hose on the expansion tank side and 5/16 ID hose on the engine side with a barb-barb reducer between them. Pic from facultyofmusic's post (https://thefactoryfiveforum.com/showthread.php?40301-Danny-Boy-s-Mk4-Build-End-of-2022-and-Crunch-Time-Pt-1&p=494423&viewfull=1#post494423)
https://thefactoryfiveforum.com/attachment.php?attachmentid=177737&d=1672950644

REFERENCE INFO: 2015 Mustang GT cooling system parts
https://thefactoryfiveforum.com/attachment.php?attachmentid=177738&d=1672951307
List of parts needed (from EdwardB's 20th anniversary build POST #143 (https://thefactoryfiveforum.com/showthread.php?18591-EdwardBs-Mk4-8674-20th-Anniversary-Build&p=220495&viewfull=1#post220495)):

CL3Z-8260-A / Motocraft KM-5114 (#11 from image, but from a 2012 F150 upper radiator hose instead of Mustang version)
FR3Z-8C289-C (#13 from image): expansion tank bottom to engine. An updated version of FR3Z-8C289-B.
FR3Z-8075-E (#10 from image): expansion tank top/front to radiator DS, including one-way check valve. An updated version of FR3Z-8075-C.
DG9Z-8100-A (#8 from image): Stock Mustang reservoir cap.
FR3Z-8276-B (#9 from image): Hose from the overflow tank top/rear to the water neck near the throttle body.
Dayco E70621 (#12 from image): lower radiator hose (included w/ FFR Coyote Installation Kit)

[edwardb]

The only "special" hose is the FR3Z-8075-E (#10 from image) expansion tank top/front to radiator DS because it has the one-way check valve. The balance could be made yourself by matching the hose sizes to the appropriate fittings. The purpose made Ford hoses are easier because they are fitted and have mostly appropriate bends. But nothing special otherwise.

[Ducky2009]

FR3Z-8276-B - I purchased a 5/16" x 3/8" barb adaptor from JEGS

https://www.jegs.com/i/JEGS/555/15946/10002/-1

[dbo_texas]

Just posting a quick update in case others are struggling to find these 2 hoses --> I ended up just buying the Mishimoto Mustang Hose Kit which has these two hoses included. The 3rd hose in the Mishimoto kit is the radiator hose with the check valve...so now I have an extra one of those :)
Link: https://www.americanmuscle.com/mishimoto-silicone-coolant-hose-kit-1517gt.html?fbclid=IwAR0PaxiPADcIrN8ktxvEfpNRD6_9g CXybudunSMB7d-h8QKw1fDdKARRcFI
https://thefactoryfiveforum.com/attachment.php?attachmentid=188213&d=1691008330

[facultyofmusic]

Nicely done! I wish I knew about this when I did mine :P