a C6509 is a multilayer switch that works in hardware using dedidated ASIC chips.
You cannot emulate it in GNS3.
Using a router with an etherswitch network module would allow you to use SVI interfaces on the emulated node, but all other aspects like C6500 QoS will not be covered.
Hope to help
just checking out if you have some updates concerning that emulation ???
Did you succeeded implementing something that works ???
Thanks in advance