Here's the link to the car. Looks like brakes have been addressed, including booster. You might think about double-checking the stuff that's been worked on, like the heads. Head bolts, valve lash, etc. Not clear how many miles were put on it after the work, or the quality of the work, or what shape the car was in in 2018. You never know. I don't recognize the name of the shop. Not criticizing, just saying better safe than sorry.
And, inexpensive stuff that might be on last legs, like clutch master and slave cylinders are worth considering.
Good luck, looks like a nice one.
https://bringatrailer.com/listing/1971-datsun-240z-274/