Dunbar's line will have a significant size advantage on both sides of the ball.
I think it will come down to the Dunabr QB hitting his receivers, and how well Alco does in the secondary. Having seen Dunbar in the playoff game last year the QB (who is still there) had time to throw and had receivers open. But drops and a few misfires were costly. If he has time to throw Alco's secondary will need to make sure to disrupt the routes or it could be messy. I think Alco will run the ball pretty well though, as a new line for Dunbar (even if they are bigger) are not going to be well prepped for the trap.