If a report at Allpar can be believed, it could be an upcoming Fiat Chrysler inline-six. Slant-6 fans (and we know you’re out there reading this), rejoice!

A semi has room to spare for a long, tall inline-6, but will always be limited in how wide it can be. One trade-off of an engine with a long stroke is that it can't turn fast RPMs like a high ...