I got this back from a well known Scooter company. I am very happy with this price,more humane.
Cheers
Stag

Hello Kenny,
Thank you for your email, to have the cylinder rebored to a 175 will cost £25.00, 175 head which is £28.08, we only have the Asso 62mm pistons in stock which are £59.00 there will be return postage also.