mountain bike frame question
 

Hello all... I am beginning the process of upgrading to a downhill bike but lack the funds to go with a full sus frame... I own an 2006 88 vf2 fork from marzocchi and after a shameful trip to the bike shop i was told my frame was too weak to handle the riding that fork could deliver... so I was wondering if there was any single sus frame out there that would support the 888 VF2 without throwing off the geometry or being easily susceptible to desturction. Thank you for answering
-Liquid PUMA