Please see the most recent updates in the "Where did the .com name go?" thread. Posts number 16 and 17.
Are the holes in the back of the nacelles the exhaust stacks for the individual cylinders?
If so, an interesting concept. Though they were flare dispensers for a short second.
I beleive they are for the sonobouys to pop out of.
Don't they normally drop out of the fuselage?