Track day camera suggestions please

Hi,

I'm looking for a track day/completion use camera with a budget of £160.

I've looked at the Go Pro 4 'session' model but have a concern about mounting it as it's not a normal go pro size.

Otherwise, Go Pro 3s (not 3+) can be had for this sort of money and appear to be able to do 720p at 60fps which I guess would be sufficient (?)

Looking for any help or advice on one to buy if anyone has experience in this area.

Thanks

Sent from my XT1039