Mopar is releasing it as a 4.7L I-6 for a direct replacement of the 4.0l engine. 290 ft/lb torque, horsepower is at 265. http://www.leftlanenews.com/jeep-unveils-cherokee-with-4-7-liter-stroker-inline-six.html
Yeah a 75 BHP and 55 ft-lbs power boost from just a stroker crankshaft is pretty meh... #$%#ing Arsetralians.
I would consider the new aluminum Mopar 572 Hemi crate engine more news worthy, tho it is something indy cylinder heads and others have been making for a while, they just cost $20k-$30k.. the "g-Force 'cuda" has a 871 HP 572 from indy.. i do love the old AMC straight sixes.
I bet that strait 6 costs over 5 grand. That being said I want a 2 door 5 speed xj with a turbo stroker so bad.
The best 5 grand you could invest in on a Jeep Cherokee. Actually, it isn't. But it will presumably have some sort of warranty, which is nice, and the convenience of installation is definitely a plus.
according to wiki, AMC six (of this block) started in 1964.. will be 46 years old soon. They are a great engine.. most can last 300k+ miles, and they don't weight too much either, about 400 pounds.