Purchased my first boat and motor and I am enjoying working on it. But I'm getting a little confused when trying to get the correct parts. For example, went to a local repair shop to get a carb repair kit, but the 98 model wasn't listed. This forum directed me to a mercruiser sight (Thanks) and I ordered the parts I needed. (Hope it's correct) Earlier I ordered an impeller repair kit from iboats and the kit arrived yesterday. I have the repair manual for force outboards, but depending on what lower unit you have governs the instructions. I have doubled checked the part number and serial number range they have listed for a 98-99 40 hp and it checks out. But when I go to the exploded view at the mercruiser sight they don't have the same gaskets shown as the one I received. Another sight doesn't have the 98-99 model listed at all, stops at 97. The kit I have reads for a 18, 20 and 25 hp, but the kit (#3215)is listed as the same for up to 60hp on the part #'s at the sight I ordered from. This is my first replacement and just trying to know if I have the correct kit before I go into it. It seems that the 98-99 models are a different breed. Guess I'll know when I take it apart, but wondering why this model is giving me confusion when I go to get parts. The engine runs great, but just needs some regular maintenance. Maybe it's just me, new to it all. Any comments or the part# on this impeller kit would be appreciated.