2018 LT5.3 into 66 PU

[LTZMAN]

Back in 1984 my dad traded a 57 chevy for this 1966 pickup. A few years later he painted it red, Back in 2012 we took it apart to replace the normal rust spots, I built a 383 engine and a 411 posi rear. We also put 2012 interior, tilt wheel,5 lug with disc brakes, and power steering.
Two months ago at breakfast he told me he was hearing a rocker arm noise
we loaded on my trailer and took to my shop. At this time he hands me the keys at 74 and said its mine now... Long story short, bad cam and lifter. This put me on craigslist looking for a ls engine. I located a 2018 L83 5.3 with 9300 miles on it. it came with a 6 automatic. These engines come factory with 355 hp but all 5,3s after 2014 dont have power steering, they have electric steering.
I worked 3 hrs on the firewall sheet metal today. I didnt like the valve covers hitting the firewall. now for some pics....