my 1979 CJ-7's 304 is worn out. What engine would be a good replacement? on 1990 Jeep Wrangler

Is it best to rebuild or replace? (The "tell us your car" info is incorrect)

Asked by for the 1990 Jeep Wrangler
Rebuild it and put it right back in, lot less head ache than adapting another engine. That is what I would do but it's your call. I see a lot of SB Chevy's in them also but then what about emissions, don't know how that would be in Ca. on a 1979.
Thanks! It just passed CA smog emissions, so I think I'll wait and rebuild it this winter.
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chevy 350 fits nice but you will spend some big money
Yeah, I found out by asking a lot of questions this weekend. Thanks