Probably help to know EAXCTLY what you're lookin for.
For example:
(1) Is it for a street resto build ?
(2) Is it to build a modified street/strip car ?
(3) Need body work already done ?
(4) Must it be rust free ?
(5), If not, how much rust can you live with ?
(6) Are you willing to buy a running car, in order to get the body you want ? The reason I ask this is because I've seen some pretty decent lookin bodies, with cheap 350 sbc crate engines, for a reasonable price.
IMO, finding a really nice, rust free '68 Bird body, for $10k or under, is unlikely, nowadays. But, stranger things have happened.
Here's what appears to be a former race Bird. Might work for a modified street/strip project, but will take lots of work & $$$$$.
https://classics.autotrader.com/clas...bird/100863687
Don't have a clue where the car is located, if it's still for sale, or what shape it's in. If it's still for sale, it may be in bad shape, cause it's been listed for quite a while.
If you can stand a '67, here's a driver for $13k.
https://www.cargurus.com/Cars/l-Used...ting=205654795
This ad is probably bogus, or car is either sold or doesn't exist, since price is too low for described '68 Bird.
https://www.carsforsale.com/vehicle/details/42755762