stud conversion kit

[liamo90]

I have come across a stud conversion kit on ebay but don't know the size I would need,
I know there m12x 1.5, will the 40mm length be right?
tell me what you guys think

http://www.ebay.co.uk/itm/280618824799?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2648

 

[2Damnsly Andy]

Liam the choice seems to be the Pure Motorsport kit as the ebay ones can strip the threads as they are a lower quality steel. More money but will last.