Best year to pull 360 from?

The 360 dodge engine came in several different transformations.

Heres a good read about the la series. Late 80 early 90's 360's may have the 308 casting la head,which is the predecessor to the magnum and really the best breathing lla head.

http://www.allpar.com/mopar/318.html

92 and later is likely a magnum series engine. Will be a roller cam block with closed chamber swirl port heads. It will be fuel injected and have 10 bolt valve covers.

The Jeep engine might be an AMC 360,which has the distributor up front on the left side of the block. I wouldn't bother with it.

Im not sure at what point the Jeep line started using Dodge motors.

Early 360's from the late 60's to mid 80's will really be much the same. There was a 4 bbl 360 option, as well as an E-58 code police engine.Smog era engines will have air injections ports in the heads which need plugging for headers.

4bbl 360's will have a 1.88 intake valve,just like the 2 bbl 360.

Compression ration is somewhere in the low 8:1 range. The magnums have a 9:1 range due to the smaller combustion chamber.