just found out my mpem is fried on my 97 speedster. dealer tells me $1700 to fix. I am debating what to do. The repair may be 1/2 the value of the boat. Do i try to find an aftermarket mpem & install myself over the winter, or do i sell/part out the boat & upgrade? i like the look of the new 4 stroke 20' speedster, but wonder if it will feel too big & draw too much water in our shallow lake. is the 310 hp or the 430 hp a better choice? more hp always sounds good. is a used 2005 speedster a good choice?