I had done it to my BDP-103 and the improvement was worth it. It wasn’t OPPOMOD but something similar. If you want something that some would consider higher quality, check out Clones Audio. Funjoe makes a very high quality LPS and has a nice YouTube tutorial showing all the necessary steps to do it right.
https://www.clonesaudio.com/accessories-1
All the best,
Nonoise
https://www.clonesaudio.com/accessories-1
All the best,
Nonoise