flathead question

[lodown2003]

when I bought my 36 coupe (project) the motor was out of the car. It is not the org engine. He told me it was a smooth running engine. would like to fire this thing up before putting it in the car. I ran the numbers off the head and It shows up as being a 1945 or 1946. motor turns freely by hand, plugs looked good, no oil deposits,and motor oil looks ok.Whats the set up should I use to bring it back to life. Were these positve or negative ground. Any help would be great, thanks.