I feel your pain. But some of that pain is your own doing. I'm wondering why you didn't just return the bushings when you couldn't find suitable inner sleeves, and why and how you managed to install them if you didn't have sleeves that were the right size. Mere friend just finished a year's worth of work on a 1985 GMC four-wheel-drive, and we had some of the same issues with parts, most aggravating the oil pan for the motor. Refreshed a four-bolt main 350ci SBC, but had a persistent oil leak at the front of the motor. Replaced the oil pan two more times and the timing cover once, using the best Fel-Pro gaskets available, until I finally ditched the O'Reilly's Spectra and Dorman oil pans ($75 and $90), and got a Pioneer oil pan from AutoZone for $149. At one point I had all three pans, and comparing these other two to the Pioneer pan, I could see how cheaply the other two were made; out of tolerance, thin front and rear mating services for the gasket, and on the Spectra pan, the rear land only contacted half of the gasket. We finally got to run with no leaks anywhere.
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