I just did my tie rods yesterday. My were bad so I replaced them booth for $80. I don't think you can bend old tire rods back to straight. Atleast I wouldn't recommend it.
My trick was to put two straight sturdy objects on booth ends of the tie rods and adjusted the new to the old length exactly. Tape measure was to hard to work with. Drives straight with less drifting/wheel play. About 1.5 hrs with a pickle fork.

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1980 300td (non turbo)225,000
1982 yamaha xs650,
I've also once loved
79 Bmw 530i, 69 VW buss, 78 Honda Acc, 79 Jeep wagoneer, 76 Peugeot 504, 82 fiat spider 124,
a bunch of guitars and a banjo www.virb.com/sethlael