Jp magazine did an article on this, in the March 2007 edition on page 94 "Bag the Banger" They simulated one stroked 2.5L and it "wound up making something like 20 hp over the stock one at a ridiculously high rpm, low end torque was worse than factory at speeds below 4,000rpm also all the parts would be custom with mostly mallory metal to keep it from shaking itself to death", by the time he was done it was in the $4,000 - $5,000 dollar range. "The head doesnt really support any decent power levels anyway." They reccomended a turbocharger instead.
1992 Cherokee Laredo 4.0 L6, Aw4, Dana 30/35, Np242, 201k
Crower p/n 44243 Camshaft, Camsaver High Oiler Lifters, He Pistons .030 Over, Decked Block and MIlled Cylinder Head. Melling High Volume Oil Pump
Flowmaster Super 40/ Cat and Tailpipe Delete, Apn Header, Homebrew Bored Throttle Body, Rustys Cold Air Intake with Spacer