Are you sure it has a 3 bladed prop?
The SF IIC served for less than a year before they were all converted to L IIC standard, due to their poor performance. The conversions were completed in the first half of 43.
The Seafire IIC was actually the worst performer of all, slower than the first IB, and had a top speed of 333mph. Does that qualify it as AH's slowest fighter?
With AH's late war bias, surely we aren't going to get the worst Seafire model of all?