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