TIPS FOR SUCCESS:
You’ll have to cut a few pipes: both tailpieces, the waste arm and maybe the trap arm. A fine-tooth hacksaw works best.
When in doubt, mark and cut pipes a bit long. Better to cut twice than cut too short and make an extra trip to the hardware store. Don’t forget to insert tailpiece washers ( Photo 1). Other joints require cone washers. The only joint without a washer is the ground joint at the trap. Connect everything loosely until the whole assembly is complete. Then tighten all the slip nuts. Hand-tighten the slip nuts. If any joints leak when you test the new assembly, tighten them slightly with slip-joint pliers.
Lastly, check for leaks. To see how, search for “finish a plumbing job” at familyhandyman.com.