Sam,
We've got a 2003 356, which we've had for 9 seasons. So far, we've had very good luck with the boat. I've got a matrix of performance specs
for the Volvo 8.1's in a 2001 356 in excel format, which doesn't lend itself to posting here. If you want to e-mail me directly, I can send you the file. davec(at)cvorides(dot)com
Dave