Hi Jason, I'm a fan of ACI, they are at Carlisle and have quite a display to look at. No idea about ecklers but it is an outsourced part I think?
ACI does all their own so your going right to the maker. I'm looking at bumpers from them right now, if you order anything from them they will truck it to the show for free....that will save you a few hundred in shipping costs. I'm sure you have checked out their site, looks like quality is big.
Guess you will have to come to Carlisle and meet some of us! Only three weeks away get that order in!
1973 L-82 4 spd