If they are the skate trucks.... dump them. Until GI/MBS/etc get rid of the sintered plates and bits, I am not a fan of them.
The Prodigy 90 should be drilled for Torsion Bionics in addition to the skate trucks.... you just won't be using the black rubber riser.
If you wanted to do Spring Bionics you would have to drill 2 additional holes for the adjustment screws.
The Torsion Bionics are primarily adjustable by swapping out cubes at ~ $24.00 a set.
The Spring Bionics you can adjust by using 1 of 3 different durometer (stiffness) eggs, and also by adjust the tension screws.
Don't know if the hole pattern is the same for the various MBS Matrix trucks.... thought they were, but you would have to confirm. In which case,
they would be another option.
Not particularly cheap either way, but better than constantly waiting on new parts.
They actually shipped the Prodigy 90 out in both truck configurations. When I got mine, I was surprised to find Bionic Trucks on them.
ATB,
Sam
"I never had any friends later on like the ones I had when I was 12 - Jesus, does anyone?" - The Body by Stephen King