I'm fixing my IIfx as well. And I only found 2(!!) of those #@*&@#!! 47µf @ 16V leaky can caps; they are on the extreme right side of the board about 6 inches from the rear, the rest are solid state Tantalum Caps. Apple used Tantalum SMD/SMT caps, including those 47µf @ 16V, on the IIfx, but they are black, not yellow. Trag is sending me 2 of those black caps to fix those two leaky caps. You would need to check how many of those leaky can caps are on the board vs. how many SMD/SMT black or yellow caps Apple used on your board.
There are also 4 Axial Caps, but they seem OK on my IIfx.
I searched several of my boards, and it seems that where Apple did use solid SMD/SMT caps, they used the black ones. Out of many black caps, I only found 1 yellow cap in the entire collection and it was a tiny one in size.
Now, about that Powerbook 100...