Recall style coolant reservoir tank

[Moorekl]

How can I convert this over to the original style or even just find a replacement “egg” style one. No luck finding one anywhere

 

[Switchback]

I'm fairly certain you have the pre-recall tank. Regardless here's what I found:
Post-Recall Tank: https://www.ford.com/product/radiator-overflow-tank-p4000033253
Original Tank: https://www.ford.com/product/radiator-overflow-tank-p4000028623

Looks like you might need to change a coolant line when you replace the tank, but I'd recommend doing it anyway. Old coolant lines can get brittle (especially the plastic upper line, I snapped mine and watched my car bleed coolant everywhere while trying to rip the symposer off)

Ron also has every coolant line that comes off the reservoir in a kit:
https://whooshmotorsports.com/produ...14-2019-fiesta-st?_pos=2&_sid=070f84fc2&_ss=r

I haven't priced out buying all the parts individually, but I have found that Ron tends to add an upcharge to any OE part.