Stumbling Slant --what is left??

Like MOPAROFFICIAL said, likely time for a rebuild. You have a lot of new parts to go along with the rebuild!

How many miles are on that engine?
Bought it in 2010...the guy I bought it from claimed it had 80K on it. My odometer has been broken since 2007, but I drive it every day 30 miles RT to work, so figure maybe 8K a year, so that's somewhere north of 170K on this engine. I had 285k on the 170 (this one's the 225) before I replaced it.