Mind if I chime in?
From what I can tell after seeing both my OHV and SOHC engines taken apart, the BBK kit is adaptable to the SOHC. the intake adapter plates would need to be modified, as would the FPR and the computer. It's rumored that BBK is currently in development with a SOHC blower, but that's not substantiated. I do know that if BBK was flooded with questions about a SOHC blower, they would make it. They can't make enough of the OHV blowers.
With a very experienced mechanic, the current kit could be modified to fit the SOHC. That's my opinion. I asked my mechanic about it, and he said it would take some fabbing and $$$, but it definately could be done.