The integration cap is C119, right at the bottom of the board.
There are some changes to the placement, but not really much. The general layout is similar.
There are also some changes to the circuit and values: e.g. 2 diodes each at the slope amplifier, larger resistors and thus a smaller capacitor at the output of the LT1001 in the integrator.
No longer the large decoupling caps (C120,C121) at the integrator (at least not on the top side - there could be an tantalum cap on the bottom, but I doubt it).