Hahaha as Ruan says, we often have heated arguments about these things.... im well pikey and risk everything (though I've never had shell issues! 
they are over-engineered), but if you're getting it balanced/doing the whole job properly, you might aswell go the extra £100 for some new shells to make it an almost brand new bottom end... purely for piece of mind, I just never deem it necessary for me because my point of view is skewed somewhat......
First off make sure they will fit though!
they are over-engineered), but if you're getting it balanced/doing the whole job properly, you might aswell go the extra £100 for some new shells to make it an almost brand new bottom end... purely for piece of mind, I just never deem it necessary for me because my point of view is skewed somewhat......First off make sure they will fit though!
![[Image: 22f2b6b2-758b-4c1c-96fb-6fa9c6059b13_zpsf306b56b.jpg]](http://i585.photobucket.com/albums/ss299/Ha11elujaz0rs/22f2b6b2-758b-4c1c-96fb-6fa9c6059b13_zpsf306b56b.jpg)