Well recently my engine started making this clanking or loud ticking sound that gos with the engine rev, It was low about 1 and a half liters of oil ....
you can hear it pretty loud and distinctively under the engine, i used a stethoscope and the loudest area i can find it in is the exhaust...
Confection rod bearing? valves lifters crank bearing..... ?

Any thoughts

rod bearings or valves are quite possible

the 3.7 does NOT like to run low on oil, it's quite sensitive

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03 Renegade (Black)
177k miles 3.7L gas - 45RFE
Command Trac / 4.10s
Lift: ft. 790+ rr. JBA4+
The last of the TrailReady Front&Rear Bumpers and TR Rock Rails
Jarhead Offroad light covers
31x10.5R15 RedLetter Grabbers on Blackrock Dunes
L.O.S.T #KD098632

This I can attest......

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'02 Jeep KJ 4x4- Gone
'92 YJ- lift, swampers, bumpers....yeah, its pretty sweet.
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I also can not be held liable for any jeep breakage or life problems caused due to my advice being taken.