most of the ones im seeing out there( bargain bin and Ebay) are a single "mast" style for the GPs, however mine seems to have a metal rectangular frame style. Same as the one i tried to remove at the JY the other day. (only had a few minutes)
Single Mast style
http://item.mobileweb.ebay.com/viewitem?itemId=150975019273&index=0&nav=SEARCH&nid=85701591386
Box style
http://item.mobileweb.ebay.com/viewitem?itemId=181031599382&index=6&nav=SEARCH&nid=72841035867
which is the correct style...
local JY charges $27 for these so i might as well get it new... lol
Single Mast style
http://item.mobileweb.ebay.com/viewitem?itemId=150975019273&index=0&nav=SEARCH&nid=85701591386
Box style
http://item.mobileweb.ebay.com/viewitem?itemId=181031599382&index=6&nav=SEARCH&nid=72841035867
which is the correct style...
local JY charges $27 for these so i might as well get it new... lol