Stock or after market 340 exhaust tips?

Be aware: While I love most of Accurate Limited's products their repop tips that they say are for 1970 Darts (and appropriate for 1970-73 Darts with valance panels under the bumper) are not right if you are looking to match the factory look. The originals had a very long squared box - so long that the L bracket for the hanger is on the box. This allows the box to project out beyond the valance panel to avoid carbon deposits on the painted valance. I've been trying to get them to make correct tips - even gave them an old original tip to use as a model - but no luck yet.