I seem to remember that a single piece wrist pin bushing could be had as well. If it doesn't have the factory oil cooler on it, get one.

Another trick around here is to take the timing from 4 degrees BTDC and set it at 2 degrees BTDC or even at TDC for the injection timing. Setting it at 2 or 0 seems to take a lot of the stress off the wrist pin bushings.