Product review (4 stars): They worked - much cheaper to do it yourself than hiring a repairman
These worked well, however the seller sent a GRLP4 conversion kit. This kit happened to work for my stove, but it will not work for every stove.

The instructions are somewhat incomplete; they don't cover SPECIFIC models so some guesswork is necessary (for example where certain things are located or what they look like).

Take your time, and you can do this yourself.