Remove #1 plug and turn it over until you have reached TDC on the compression stroke. Now, lets see if your mark on the harmonic balancer is indicating near tdc. I noticed the mix match colors and wrong timing chain cover earlier as well. My 1st thought was someone had swapped them out.. followed by I hope the 340 is in there! Stoked to see a X head 340 living in there.
I notice the exhaust on the floor, are you going to install your headers?