Stu...its an in the mind thing mate
When i asked for a cambelt from Ford and it came out looking like you could tear it i said NOOOOOOOO i aint using that.....of course the one on my car when i bought it was the grp a belt so i had to replace it with the same meatier looking belt.
Be warned dont use the std belt on big turbo/bhp applications due to heat and possible std belt failure!