Yes, but not as much as you might think. Would you believe a remanufactured 288 (4.7 litre) stroker long block with 7 year, 100,000 mile warranty for $2,035 (plus $400 core chg)? S&J says it's built for for reliability and makes only (for a stroker) 240 hp. I asked for an RV cam so it should make a bit more. I'm excited about the torque.
Of course that also requires manifolds, fuel injection, and OBD computer. But after talking to lots of AMC and Jeep people, and reading on this forum and others, it seemed a worthwhile investment to be rid of the the electronic feedback Carter and the mess of vacuum lines.
I put a 383 stroker in my 98 Chevy K1500 in 2005. After 9 years and 110K miles that truck still puts a grin on my face every time I drive it. It wouldn't win at the drags, but it moves out with authority, pulls any load the suspension can handle, and is never lacking for more gas pedal. Long story short, I'm a big fan of my Chevy stroker.
S&J lists their remanufactured 4.0 for $1,417. After considering the total cost of the install and FI conversion, another $600 seemed not too much more to live the stroker dream in my Eagle.