I have like you been looking at night sights for my Para and the best I have found are made by Trijicon. Ajax Grips has them listed at $85 a set. The rear will fit the factory cut but the front sight will have to be staked on. Go to www.ajaxgrips.com and check them out. My gunsmith charges $20 to stake on a front sight so you would have about $105 in the sights mounted..not bad at all.
My p-14 limited came with the bomar-type sights dovetailed in, and rather than buying new nite sites, I sent them to IWI to have tritium inserts installed,under $100.00. Good work,and its nice to retain the original sights, as they are good sights.