Volvo Penta Info

[mapleleaf]

I just picked up a 1988 Sportcraft Offshore 222 with a VP carbed 305 and an SP drive. I'm trying to figure out which model drive and motor I have but am not having any luck with the numbers shown on the motor and outdrive. The drive has SP logos on it but not a particular model and the motor has an engine cover with 500E written on it, but again no specific model(GX,GL, etc.) I lost a prop on the weekend and need to figure out what to replace it with. I believe it had a 16/16 standard prop on it, but I'm not sure. I picked up a 15/17 from a friend and am going to try that out. Any help or advice would be greatly appreciated as I am new to VP set ups. The numbers on the engine cover are: 500E P/S 4100143460 B68495
Drive: 104114011