Help needed identifying spur gears

[Khairul]

Hi everyone, I'm attempting to bring back to life an old Pirate 10. This car was modified from the original single speed to a two speed gearbox. Unfortunately, the gears are stripped, and I'm trying to identify the gears used. As you can see from the photos, they are flat on one side, and on the other they "sunk" with four locating dowels. Do these look at all familiar to anyone?

 

[robmob]

Nitrohouse.com has. 2-speed tranny for the pirate. Part #18990

 

[Khairul]

Yeah, I had seen that during my research, but at $112 it's a bit steep. I'm leaving that as the last resort.

 

[Greywolf74]

Sorry, doesn't look familiar to me