There was a stang in PHR not too long ago that had a 4.6 blower motor from an 03' cobra in it. Actually came out as a pretty clean build.
I'm not a huge fan of mod motors, mostly cause as you really turn up the power if something gives it's not easy to repair, there just isn't any metal there to work with and the blocks don't take well to resleeving. There isn't the huge cost/easy advantage to a mod like there is with an LSx setup. It's just pretty darn hard to beat the pushrod fords.
The new Hemi has monster potential but it's going to be expensive till the aftermarket really catches up. Not that it matters though, us mopar guys are gluttons for punishment and used to paying out the
for everything.
I still like the viper motor swaps
stock motor + 10psi from a turbo or two and you're putting an easy 850+ to the wheels on pump gas.