This is an '85 Starcraft 191 I/O. Stringers, transom, bulkheads, deck all fine. Motor mount area needs replacement. I've done some glass work but never structural, need some advice. I've read some threads and come up with his. Cut out the wood/glass that's bad, prep area, set the wood with the pb mix and re-glass as original. 1st what do you call the 2 rectangle boxes along the stringers glassed to the transom, stringer, hull and bulkhead? The uprights are 1 1/2 X 4" fir, the tops are 1 1/2" ply wood. Is that the right wood for the rebuild? 2nd, what would be the proper mat and resin to use in this area? Have'nt found a thread specific to this spot on the hull.