F = built by Reims in France. Same TCDS (Type Certificate Data Sheet) assuming no changes along the way. Reins did enhance some models by changing engines and increasing horsepower.
The C150 had the Continental 0-200 engine replaced by a Rolls Royce 0-200 and required a different upper engine cowl.
The C175, is powered by a Continental GO-300, I think something like 3200 or 3400 RPM at takeoff.. long time ago, exact figures elude me.
If your just training in the aircraft what is the problem ??? Only becomes an issue if you want to purchase.