Old bathtub drain advice

[Tgat]

Pics attached

Remodeling my 2nd bathroom in my house built in the 60s. Going to be dry fitting a tub soon and need to address this cast iron to brass drain that is under the slab. Also keeping in mind I may have to have the drain come to the left a couple of inches as the old tub was narrower than most of the modern 30” tubs that I’m looking at.

My current options as far as I know are a Fernco donut where the brass inserts at the top of the pea trap or fernco donut where the horizontal cast iron hub exists before the pea trap. Both of these hubs look to be in very bad shape so not to keen on removing pipe from either and attempting to insert a donut. Possibly thinking another option is a fernco rubber/metal sleeve over the existing brass after I shorten it some?

Any input is greatly appreciated!!

 

[Breplum]

A reputable plumber would break concrete and do the whole thing modern. Period. No other solution is ideal.

 

[Sponsor]

 

[DIYorBust]

I cannot see very well from the picture what the condition of the pipe is, but I've had to deal with similar in a much older house. If the cast iron drain is usable, you could carefully cut off the smaller drain pipe a few inches above the hub, and then use a no hub coupling of the right size and connect to PVC. The feasibility of this would depend on the condition of the existing pipes and the size of that drain. I can't disagree with the previous post that it would be better to replace the entire drain with modern, but it is possible that this system could last decades longer, mine is over 100 years old, and uses galvanized drains for some fixtures. You'd have to consider how likely you will need to replace those drain anyway in the future while you own the home, and what else you might have to sacrifice in your budget to replumb. If it were me, I would try to avoid remaking that bell and spigot joint, but a competent plumber should be able to do it if needed.