I'm trying to find out a little more info about the engine in my '85 K5. The casting number is 10066036 and on the plate behind the alternator is MO322 and 3VP just under that. I checked MORTEC and it stated that it was a Target/Goodwrench crate motor and either 2 or 4 bolt. I was hoping to find out the year and possibly the specs on the engine (torque , HP). This engine also has "hencho en mexico" stamped in both the block and heads.......Aren't parts made in mexico weaker and prone to cracks? Thanks for all the help!!