If the tailpiece will not line up with the trap move the trap into its original position tighten the collar with the pipe wrench and obtain a flexible tailpiece extension for your drain.
Bathroom sink tailpiece too long.
Trim the tailpiece to fit.
New tailpieces come quite long so they can be trimmed to fit.
Slide it onto the tailpiece and.
I suggest that you do dry run meaning assemble and hand tighten all drain pieces including tail piece first.
You doing this for measuring purposes only.
Then cut tail piece accordingly.
If it s too long cut it with a hacksaw.
There is lots of play so no worries.
If it s too short add a tailpiece extension which is a short length of pvc pipe.
This bathroom sink tailpiece too long graphic has 20 dominated colors which include uniform grey silver tin cab sav steel pig iron sunny pavement thamar black kettleman snowflake black white benthic black driftwood bengala red honeydew rusty nail foundation white himalayan salt ivory.