So today I have been working on the front end and split the xmsn from the engine. I have a few questions. 1948 6100/6400
1. I have a mid 50s 235 that I am honing and putting new rings in. I also have the SM420 XMSN with it. If I got a SM465; would it bolt right in where the 420 was? No modifications to the engine/bell housing/truck frame? A "turn key" operation.
2. The truck had a hydrovac brake booster on it originally. Is it worth it to spend the time and money to have it rebuilt and reinstall it or just hook the brakes up the way they are now? How much of a difference does the booster make?

Pictures linked below.
https://plus.google.com/u/0/photos/...83827133312247138?authkey=CKmh3KLYotmIVA