The Data Base says it is a Gi-F and was a new engine manufactured in May 2006. The alternator bracket says "5.7 GXI family" this bracket was used on nearly all VP small blocks that year. It appears it was a replacement new complete engine put in your boat in 2006. All your pictures show parts applicable to a 5.7 Gi-F, including the plastic cover. See https://www.marinepartseurope.com/en/volvo-penta-cat-7744840.aspx