Has anybody added an FX loop?

I got a Master Lead 50 w/ 2x12 cab. Glorious tone, but a bit limited as a studio amp. Has anybody looked to see what adding an FX loop would take? Full disclosure: I don’t run effects through my FX loops. I use them as an entry point to the power section or as a preamp out. The ML50 has a cool line out from the speaker, but it seems like its all or nothing. Full disclosure 2: I have a Power Station. Love it. Use it on every session… Still would like access to the power section of the ML50. Edit: The Fryette Deliverance has an FX Loop Kit… but the current model has an FX loop. Let’s ask for the same treatment! Free the FX loops!