Re: Which Carb for my 258?
Go with the MC 2100. You can get one at most parts stores. Ask for a carb for a '79 CJ-7 w/ a 304. This should get you the right one. There will be a core charge, but there are ways around that, just put your carter in the box then return it for the core. They usually dont check or dont know the difference anyway. Or you could go to your local pick-n-pull, and get one off a ford 302, mine came off a 82 f-100 w/ a v-6. You wont regret the swap. BTW I have a 258 bored .040, w/ a crane rv cam, it works great on mine. Read some of the post on the 2100 and you'll have all the info you need. Good luck.
1980 CJ-7 all custom