Kerry, I've always had great customer service from Pace performance. In my experience a phone call will also get you a much better price than posted online.
One of the managers, Greg Wass (sp?) Is a G8 guy, so I used to deal with him often. They also own a dealership, so parts are always quick to ship.
Their website lists lots of 350 options, but this one looks cool. HP is lower than you asked but it's fuel injected and turnkey, and I'll bet you could get it close to your price.
https://paceperformance.com/i-23835653-gmp-19355658-cfx-pace-fuel-injected-350-290hp-turnkey-crate-engine-with-retro-style-corvette-package.html
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