Looking For LED lights for my 68 Barracuda

Not if you're smart and want to reduce your likelihood of getting hit in traffic instead of increasing it; nothing that site sells will work safely and effectively in your car's safety (exterior) lights.

Not right out of the package they won't, but mine are heavily modified and doubled up and are without doubt WAY more visible from all angles than OEM.
But we have been down this road before. :D

For right out of the package replacements use Dan's suggestion.