65 Barracuda front disc brake swap

That is just the 1973+ factory disk parts. For that price, you could buy a Wilwood setup which is much lighter and better (4 pot fixed calipers, instead of single pot sliders).

Look at Scarebird (ebay). Cost ~$105 for brackets you bolt to your existing spindles (different ones for 9" or 10" drums). The other parts are GM & Toyota which may buy locally and not pay exhorbitant shipping to Turkey. Since you are already BBP, you might have new studs installed in your hubs. I think some people have done that, and there is just enough "meat" to drill for BBP. With 15" wheels, no problem clearing the calipers.