Magnum VS Hemi
I might add that if you want EFI, it becomes a bit less clear.
An EFI Magnum requires the same expensive fuel system as the Hemi, so that is a wash, but if you want Hemi power from your SMPI 5.9 it get's harder to do. Pretty sure it is cheaper to have the security removed from a 6.1 ECU than get a 5.9 ECU tuned for 400 hp. Not that I have checked, just a guess.
And you can use Jeep manifolds and skip the expensive headers, too.
Not trying to sway anyone, just saying.
I will probably keep my LA, but more because it is the # matching block and I don't want to store it, and because it is getting close to becoming the uncommon swap these days. ;-)