1953 new Yorker 5.7 hemi 545 upgrade

my hotrod friends call me Tennessee Ken, I am Simi retired and have built hot rods most of my life as a passion, not for a living.
I have a customer who asked me to upgrade his Grandmothers 53 new Yorker to a modern. We upgraded the brakes, add independent front suspension, 12 volt, A/c we choose a 5.7 out of a 2013 charger and a 545rfe transmission. I bought a stand alone system from swap spealities In October 2019. I received it late March and it hasn't worked. I have gave up hope on them helping me ,so I have replaced most of the sensors bought new pedals throttle body and paid Mopar tech for wiring diagrams.
The engine on the PC shows everything seems normal.
Won't crank. I pulled the number 1 plugs out and grounded them to see if it was firing. The motor turned about 2 times and cranked it will set and run and start smoothing out. Put the plugs in and it will not start . We thought it may be the crank sensors so we replaced them.
I need help, I have spent tons of free hours and now I'm coming to the end of my rope.
Is there someone maybe a Mopar God that can give me some guidance, I'm not slamming swap spealities, the Rona has us all messed up. who can make me a harness or who maybe send me in the right direction.
Thanks Ken