You really don't need any special tools. Just a normal 14mm wrench will do- you may need to grind it thinner so have a cheap one at hand to sacrifice.

The bent ones are probably nice to have ( I don't have them), but you may need your money for something else.

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80 300SD (129k mi) 82 240D stick (193k mi)77 240D auto - stick to be (153k mi) 85 380SL (145k mi) 89 BMW 535i 82 Diesel Rabbit Pickup (374k mi) 91 Jetta IDI Diesel (155k mi) 81 VW Rabbit Convertible Diesel 70 Triumph Spitfire Mk III (63kmi)66 Triumph TR4a IRS (90k mi)67 Ford F-100 (??)