This might interest anybody who's thinking of doing a late model Gen 3 Hemi swap into something older

[Wild one]

Deep Dive: Holley Terminator X For The Gen III Hemi

Holley's Terminator X standalone engine management system brings plug-and-play control for the Gen III Hemi at roughly the same cost as a factory solution, but with a lot less hassle. Here we take a closer look at how this system can deliver more functionality and make your engine swap a whole...

www.holley.com

 

[HemiLonestar]

Even works well within the 3G Ram. Guy on HTC with a 2004 QC running a 6.1 based 392 with an 8HP70 with one of those setups and the factory gauges work.