wow,just remembered this thread,was a good time when we had the technical threads going
this one in particular goes to show why YB builds done properly cost what they do. there may be less than £2k of parts,but it takes hours and hours to properly measure,balance,prepare,weigh etc etc and then every nut and bolt needs to be torqued and loctite'd up.
if you think a companies price is really cheap,then it usually is for a reason

no names mentioned
i loved building my old engine up, i didn't enjoy removing it and stripping it when it was covered in oil though