Does anybody have alot of experience swapping water pumps over in Mk1's, specifically the housing unit. Have researched alittle and most people recon the bolts shear when u try to remove them so just get housing aswell. Been quoted $175 for pump and housing through VW (they think it will be this price but will get back to me??

) They want the unit to be exchanged and require my old unit to be cleaned thoroughly??
So where I'm going with this is......do the bolts shear really easily or should i wing it and try to remove it. Any advice from anyone who has done this would be handy cheers.