Carter BBD
I have the infamous Carter BBD on my CJ.  It gets a lot of bad press but I have to admit mine isn't that bad...
Maybe I am one of the lucky ones.  Now it is still a carburator - I much rather have a Howell FI.

Project:  Carter BBD rebuild
Difficulty:  1
Time:  About 2 hours start to finish
Opinion:  Not difficult at all.  The parts from the rebuild did not seem to make that much of a difference.  I did need the gaskets.  Setting the carburator adjustments according to the instructions helped the most.  The automatic choke actually works correctily.  I would also clean the idle tubes while your at it.  They have a tendency to get gummed up.
Carter BBD - Exploded View
Carter BBD - Adjustments
Carter BBD - Setting
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