UPDATE: I found once at Scooter-Center. Thanks folks

Hi guys! Long time lurker, first time poster. I'm searching for an exhaust rocker arm for a Vespa S50 or LX50 four valve engine. I believe a Typhoon 50 exhaust rocker are would work as well. A good used 4 valve cylinder head would work as well.
If you a new or used one for sale, please let me know!

Thank you, Tom