Removing the front fender requires that you remove a few othe components at the grill. The headlight bucket needs to be removed or detached from the grill components. The top fender bolts need to be removed and the two bolts at the rear of the fender need to be removed, one is at the bottom of the fender and the other is accessed through the door jamb area. Check this link for some visuals and details that may help.
http://averagejoerestoration.com/project-playboy/mustang-disassembly/front-end-disassembly/
1965-1966
on tje drivers side fender apron exposed and on pass fender apron under fender
Roughly 1965 You could also remove the neck, there's a stamp on the heel with the exact date of production
To remove the front fender on a 1965 GTO, start by disconnecting the battery and removing the front grille to access the fender bolts. Next, unbolt the fender from the inner fender well, the A-pillar, and the bottom of the fender near the rocker panel. Finally, carefully pull the fender away from the body, ensuring not to damage any attached components or wiring. It's helpful to have a second person assist with this process to avoid any scratches or dents.
there is a stencil kit that makes it alot easier
Behind the front grill above the front bumper.
To remove the antenna from a 1965 Thunderbird, first, locate the antenna base, typically found on the front fender. Use a wrench to unscrew the retaining nut that holds the antenna in place. Once loosened, pull the antenna out from the fender, and disconnect any wiring if applicable. Be careful not to damage the surrounding paint or trim during the removal process.
1 way to tell a 1964 Mustang from a 1965 Mustang is to look under the hood the 1964 relied on a generator and the 1965 had an alternator.
Shelby Mustang was created in 1965.
1965 mustang
To upgrade the front disc brakes on a 1965 Mustang, you can use disc brake kits designed specifically for the 1965 model or components from later Mustang models, such as the 1966-1970. Common options include using spindles and brakes from a 1967-1968 Mustang or aftermarket kits that include all necessary components. Kits from vendors like Wilwood or Baer are also popular for improved performance. Always ensure compatibility with your current setup and consult installation guides for best results.
A 1965 Shelby Mustang , 289 V8 , was rated at 306 BHP