Stock grid heater replacement

[Jekyll]

So this might be a new one. I've got a '14 2500 and I want to replace the stock grid heater with an aftermarket replacement to prevent the failure involved, but the only options I can find are deleting it completely. The truck is bone stock, under extended warranty until 2025, and located in colder climate.

Are there any aftermarket options?

Am I stuck getting an OEM Mopar heater / plenum?

Thank you in advance.

-Jamie Lund