Identify Exhaust Jetting

Hello Forum, this is my first post. Please can anyone help me identify the exhaust i have on my primavera engine. I believe it maybe the same one as Beedspeed sell(picture attached)?

If it is then would anyone know the recommended jetting for a SHBC 19.19 carb. The carb was bought brand new from SIP and the scoot started on the 2nd kick. [:D]

Beedspeed have advised to go for 80 Main Jet, fingers crossed this will be ok !