440 what am I missing here?

Sorry not much help, but I would really like to se a pic of the big block under the hood.
I have a 46 dodge truck, that I bought a few months ago, and the previous owner said he could not get the flat six running.
I have not tried to get it running yet, but I do have a bunch of big blocks looking for a home.
How much did you have to modify the firewall?
No firewall mods. Built my own frame, but you could bolt in a k member to original frame I'm sure with some fab and imagination. I will see if I have seen good pics showing what ya need .2018-09-16 00.44.24.jpg 2018-09-21 21.47.46.jpg 2018-10-05 20.02.55.jpgwi have to look for pics of engine bay once assembled from above so you can see fitment. If I can't find any I will take some when I get it out for cam swap.