Doubt anyone is going to come out and offer you this.
What might work is contacting somebody directly and if there's a potential for the project to be commercially successful or at least make some kind of a splash, somebody might do it in exchange for advertising, like "so and so guitars have been used on this recording".
Maybe not everyone is aware of this: even if the user didn't specify the location in the profile, if you click on the user name you'll see the current location's flag and if you hover over it with the mouse it will display the location name. Not sure but it may be based on your computer IP address. This only works on the desktop version of the site, not on mobile.
Comments
What might work is contacting somebody directly and if there's a potential for the project to be commercially successful or at least make some kind of a splash, somebody might do it in exchange for advertising, like "so and so guitars have been used on this recording".
www.denischang.com
www.dc-musicschool.com