I read with interest the many suggestions given to the owner of the '58 with the 413.' I think they were all on the right track, but with one omission that I thought I should address, from personal experience, and misfortune. Take care to flush out the cooling system as well as you can before you start. It will have all kinds of unwanted residue in it, from rust to mineral deposits. The radiator was not designed to be dry and may clog badly when you first start it up. If you are going to get the gas tank professionally cleaned out, which having done this project several times myself due to lack of funds to do anything different, I recommend, get the radiator cleaned too. (Tank cleaning is neither fun nor fast, and the chemicals definitely fall into the hazardous materials class.) While the radiator is off, blast water and cooling system cleaner through the block as often as you like. Removing the water pump for greater access is a good thing too. The gunk you will remove will astonish you, but your engine will thank you. Once you have the engine running you should dump the cooling system contents out again while still warm and the sediment is still suspended in the fluid. Don't bother with that itty bitty radiator drain valve. Take off the lower hose to it and get that stuff out quick. My 58, with 392 Hemi, was restarted from over ten years idleness with a fill of the radiator and the installation of a battery, and some gas in the tank. It fired pretty quickly, too, and put an indelible black stain on the wall in front of which the car had stood so long. The fuel pump took several years to die, but the water pump got clogged and blew its seal very quickly. I have never done that again. In fact, it wasn't me who did it the first time, although I was there. It was someone else's would be project at the time, but his enthusiasm paled rather quickly. Mine has just grown. Once you have it running, your next order of business will be the brakes. Can't go anywhere if you cannot stop. This project would test the patience of Job. I will not ruin your enthusiasm at this point with what you MAY find. I just hope it is a lot prettier than what I had to deal with. All the best. Hugh