I kinda got lucky, i guess, but I went to a local salvage yard looking for a timing belt inner cover. They said they had an '07 but wouldn't tear the engine down to sell me that piece. I asked "how much for the motor". He said he'd sell me the motor & tranny both for $900.00!!! I said "will it crank?". It did & I bought it, bolted it in & just reached 1000 miles on it with no error codes. The point is, if you're not in a hurry, (I also have a jeep) an engine can be found. You will have to get it QUICK! Because of the TB issue, they go fast! I actually had to wait three days for the insurance company to total the car before he could sell me the parts! IMHO, it would be faster & easier than a block rebuild, and comparibly priced. My '05 Aveo just lost over 133,000 miles & costed me about $1300.00 Including all new fluids & filters.
"One thing I'm pulling my hair out and feeling really stupid about is getting the dang Cam Sprockets out. Every other OHC car I've worked on has had flats on the cam to put a wrench and counter rotate against the sprocket bolt.... I see no such flats on my cams..."
I used an "L" shaped allen wrench inserted into the inner TB cover bolt heads to prevent the sprockets from rotating when I unbolted them. I knew I wouldn't be able to get them out, or that cover off with the sprockets in place. I'm sure it would also work for the reinstallation, but because I "lucked-up" on that motor & tranny, I never put those back in.