Agreed.
Also agreed. What you're missing, is since I don't know what shape these are in I could easily put the money in and go a different direction wasting the funds. If they work fine there's no reason to rebuild them. The Dart's not going anywhere if it needs more help later it will get it.
The GWG needed a timing chain I knew, $100. When I get into it it's so crusty there's no way I'm going to put it back together without a machine shop check, hot tank, new bearings and rings, etc. Probably shave the head a little and get the cam reground. Oh, and new exhaust since the old one had two cats and 30+ feet of pipe. I've been without a truck for almost a year and need to get this one wrapped up so I can sell the TCD.