Will 11-19 pitch work with stock VXR 650

[splasher]

I have a stock VXR, and I don't know what the stock pitch is. I have found a new ACCEL stainless impellor with a 11 - 19 pitch that will fit my ski, but would it be a good combination with a stock VXR 650?

Would I notice much difference versus the stock impellor? I have a top loader scoop intake and an ocean pro ride plate, but no engine mods. Is ACCEL a good brand name? I didn't know they did impellors...

Any suggestions appreciated.

Evan