i've got a radiator from the junkyard that didn't come with mounts and i already gave away the old ones with the original radiator, currently its just being held in with zip ties does anyone know what makes a good replacement because i would rather not have to solder the old style ones back on.

 

Not really much other choice except to solder or braze some new tabs or mounts.
Supporting the raditor directly from the tanks or the core isnt a really good idea.If you can fab some cushioned cradles under the bottom tank then find away to support the top part,it might be OK,but another junkyard radiator wouldnt be too much money either,and you wont have to fab anything.