Unfortunately, your profile does not say where you sail, so it's hard to answer. To save money many builders used undersized cockpit drains which are fine if your a bay sailor only.
If you do any open ocean sailing though you might as well up size, while your at it, to at least two inch drains. Having been pooped before I know how long a cockpit can take to drain and it seems like hours even with BIG drains.
Like I said if you're bay sailing 1 1/4 is mostly fine but 2" is far better. 1 1/2 should be considered minimum for cockpit drains though.. Any chandlery will sell the supplies you need but do get drains with debris screens...
Thanks for bring up the point about how important the profile is! I'll take a few minutes to fix that. Hey thanks for the drain info, I agree 2 is alot better than 1-1/4. I'd have to alter Irwin's factory molded floor in the cockpit area to install a 2" drain. I'll try to attach a pic so you can see what was installed. Let me know what you think.