Mopar Street Rod Websites

I have a line on a 47 Dodge that might be a good candidate for my Gen I 392. I've heard the firewall needs to be moved back among other things to install the 392. If not that motor then a slant with triple Webers. Can anyone point me in the right direction to a website or more info on the pre-48 Mopars. If I get this car, I'd like to have as much info before getting it so to be able to hit the ground running! Here's some pics the owner sent me:IMG_7383.JPGIMG_7385.JPGIMG_7384.JPG