Personally I would prefer the FBO box over that, if I had basically stock Mopar wiring and wanted to leave it.
FBO's are made in the USA and supported by a winning racer named Don Gould.
www.4secondsflat.com
"HRR688 Ignition Box and Coil Kit and you'll get a J685 Limiter Plate Included at No Charge"
Both For $199.00