A 38 frame should have most of the holes already there.
Richard Lacey has kits. Used his for a mid frame MC 38 conversion. Went with a 39 pedal later. All the lines worked with some small MC reroute. They have all the lines wheel to wheel. If a 39 pedal version, just let them know what you are doing. Spiral rock guards... etc. Very good stuff.
http://www.earlyv8garage.net/?redirect=false
If I get around to it this work week I'll take some pictures.