"shredding" what? If your starting point is a fork, you have to make sure that the frame is capable for the use for your wants. If you already own the fork, perhaps researching the bikes that it was usually mated to would provide a hint about what frame to attempt to buy. Second hand limits you to what is actually available. However, current equipment is far more capable that what was around over 20 years ago. If you want to "shred" your old equipment mat disappoint.