http://floatingdrydock.com/ has plans for the
TFW-PCE893/4 - USS PC893
TFW-PCE1604/8 - PCE1604
http://floatingdrydock.com/TFW2.htm#TFW
And Hull lines for the
HULL-PCE/3 USS PCE1376 CL
http://floatingdrydock.com/HULL.htm
If you think those ships are close enough to your service ship, contact Floating drydock and see if they can make you a set.
[8D]
http://www.navsource.org/archives/12/021606.htm
http://www.navsource.org/archives/12/02893.htm