EFI late model 4.0 Jeeps had a cam sensor where the dist USED to be (no idea if the OD the base is the same as LA or B motors )
Looks like this

http://www.ebay.com/itm/Wrangler-Grand-C...9e5&vxp=mtr

might be able to adapt something over , or at least use it to design off of

They have a crank sensor positioned on the back of the block that reads crank position off the windows on the flywheel