How much do you want to spend? Places like newcomer are making more power than a tj chassis can handle.
A mild stroker is going to make around 25% more power through the entire rpm range. And if you keep a stock top end,they aren't going to cost much more than rebuilding a 4.0l.
@Woodrow did a pretty good job of documenting before and after with his golen. They have a bigger cam and stock head if I'm not mistaken
https://wranglertjforum.com/threads/looking-for-4-6-stroker-engine-feedback.80132/
Here's the link:
Stroker Dyno Results are in… and they are not what I hoped for:
After 600 miles on the new engine, it had its first oil change and I headed back to the same Mustang Dyno the original 155K 4.0 was measured on in June when the motor made 136 hp and 168 ft.lbs. This calculated to represent a 24% drivetrain loss vs Jeep’s stock crankshaft numbers (181 hp and 222 ft.lbs). The now installed 4.6L stroker made 280 HP and 320 ft.lbs on a SuperFlow engine dyno in May. That was with no accessories, a holly stand-alone EFI system and an open header. I supposed Jeep may have used similar...
After 600 miles on the new engine, it had its first oil change and I headed back to the same Mustang Dyno the original 155K 4.0 was measured on in June when the motor made 136 hp and 168 ft.lbs. This calculated to represent a 24% drivetrain loss vs Jeep’s stock crankshaft numbers (181 hp and 222 ft.lbs). The now installed 4.6L stroker made 280 HP and 320 ft.lbs on a SuperFlow engine dyno in May. That was with no accessories, a holly stand-alone EFI system and an open header. I supposed Jeep may have used similar...