check out
Welcome to `57 Fords International Home Page it has most all the info needed
I happen to have a 57 also.
I would recommend....
upgrade to disc but with a scarebird style bracket instead of the spindles, the cost comes to about the same, but with the scarebird stuff you can run OEM wheels with no issues, aand you can switch back to original if you want.
also add a dual master and munt the brake like switch on the pedal, use a mustang styled switch.
I would hop up the Y-block, go to
Y-Blocksforever
may cost more but it's always nice to keep it as is.
Like I said I have a 57, I went with a 351W but wish I wasn't young and dumb and put that in.
There are conversions for the bell housing, check the y-block site
As far as suspension check into a rack coversion, the wirth kit is the original but but I'm sure there are other people making a similar kit now.
Most all the work is just finding the parts and bolting them in with the exception of a rack it.
Lastly, fix the headlights and add 1956 F100 trim rings