I ordered these from CLC last year and are linked from the dory page:

http://www.clcboats.com/shop/products/boat-gear/sailing-gear-accessories/gudgeon-pintles-rudder-hardware.html

They're race-lite pintles so I guess you could buy them anywhere that sells race-lite. They can be bent wider or narrower 10-20% if you need

I used the matched set of gudgeons & pintles by Schaefer:

Gudgeons:  81-01 x 2

Pintles:

80-11 (lower)

80-12 (upper)   

There are two different pintles because the lower one is longer to facilitate lining them up during installation.  My system also doesn't have the nice retaining clip that comes with CLC's.

Rudder stop:  82-01