Outboards are a new thing to me so my knowledge on them is really limited. I have a 18ft cc Trophy with a 88 Force 125 and recently bought a 91 Force 150 off of ebay with a damaged lower unit. Does anyone know if any of these parts are Compatible with one another? If not, what parts are compatible with the 91 150? Also, if anyone has a lower unit that would fit this please let me know.