***'67/'68/'69 Dart reproduction front bumpers...Any good?***

35 Years in the Autobody Refinish and Repair Industry. Aftermarket parts are cheaper for a reason, they dont quite fit as nice as OEM and they will develope rust sooner. That being said what do you intend for your cars end use? On a rotating pedistal front and center at The World of Wheels Show down at the convention center? Or daily driver, weekend warrior?
The reason for the higher expense of rechroming is all the steps/time they take to make your parts look as good or better than OEM and last as long as OEM.
Most people opt out for the repop parts, its cheaper its quicker, and most people cant tell the difference anyhow. Repop parts business had a bad reputation in its early days, but now people are a little smarter, and a little sharper, and want their pride and joy to look right. If your car is kept out of the elements you would be safe buying aftermarket bumpers.