Dave,
Your brake system performance can be attributable to any number of things, including everything is alright and what you are experiencing is simply the difference between power-assisted and non-power-assisted brakes.
For the moment though, lets assume something might be amiss ...
A good place to begin, because it is easy, is to determine the diameter of the pistons in your Wilwoods. The easy way to do this is to retrieve the Willwood Caliper number off the (usually) backside of the caliper. Once you have the caliper number you can either check the Wilwood website or call Wilwood and find out what you have.
Step #2 is to do the same thing for your brake pads. You want to know what the car is using. Here is a link to Wilwood's brake pads page =>
Wilwood Brake Pads. You may recognize the pads you have, or you may need to call Wilwood for help. Either way, you want to know what you are using because it impacts other decisions going forward.
The next thing you want to determine is the bore of your master cylinder. Master cylinder bores have a direct and very apparent impact on the pedal pressure required to stop the car. You might be able to do this by soliciting some Contemporary sites to noodle it out or by taking a part number off the master cylinder and using that to search out the specs.
Once you have this information, bring back all the goodies, toss them out on the digital decision table here, and let's see if we can make some sense out of what is going on with your brakes.