Toilet flange - transition from lead

dodge1930

I need to put in a toilet in my basement. The contractor did the plumbing when the house was built. Right now I have what looks like a lead cap coming out of the floor, it is about 7" high.

How do I transition from that to the toilet flange?

the floor around will be 5/8 plywood on top of a dipple sheet. making the total height off of the concrete about 1"

Thanks

joecaption

Post a picture.
Lead has not been used much for many years, I'm surprized he did not just use a PVC stub out.