Be careful with newrudders.com, which is Foss Foam. They're one of the few 'rudder shops' at all and my friend used them after getting great reccomendations. But first they shipped (ka-ching) a rudder built to the wrong dimensions, then they lost weeks reshipping it (didn't pick up on time, didn't ship on time) and there were some weeks when no one answered the phone at all. No excuse ever given.
This wasn't an all-custom rudder, he only wanted a "notch" on it changed to match his hull profile. What shipped simply had been changed to the wrong dimensions, not the ones they were given.
If they have a stock replacement on hand for your stock rudder and all they need to do is ship it...and answer their phone...it might work out OK.
The new rudder has been OK so far, but would my friend use them again? Preferably not, they simply dropped the ball too many times. The product seemed OK, the service sadly unfocussed.