Help with prop/drive

[gotigers54]

Hello all! First post but have been lurking around for a bit. I bought my first boat got a screaming deal on a 2003 chaparral 220 ssi with a Volvo penta 5.7 gi and we are loving it. Question is the out drive says Volvo penta duo prop but it's set up right now as a single, I can't make out the serial number to look up the exact drive so I came here to ask what I would have to do if I wanted to add the duo props. Thanks in advance for an answer to the first of many questions

 

[Texasmark]

Ping BruceB. I don't remember his full "handle" but go to the Volvo and probably Mercruiser sections, and scroll down the list of entries checking for his name. He has a dup prop Volvo, and posts on here regularly. Posts regularly in the boats section too. Should be able to help.