im gonna have to second the POR-15, all the options here work but the kit por 15 has is really good and can be done over a weekend and i believe it is cheaper than KBS and obviously cheaper than having a radiator chop boil it or sandblast it and it works better and reseals better than lacquer.
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'76 SiennaBraun 2002
On the search for a '70-'74
SMOG ruins all the fun!