Want to install V8 in 84 cj7.  Will existing wiring harness work? Need to know where sending units are located on 304 v8 for vitals and guages. Have everything ready to go on the backporch just need some expertice to get me started. thanx to all. glad to be aboard.  

Super easy conversion since it was a stock option. OEM motor mounts, fan, and fan shroud. If the original motor was a 2.5L, then a radiator too.

Get the factory service manual, not a cheapo parts store manual, and it will have all the answers.