48 f1 Trans for a 34 will it work ?

[Rustyspokes]

I have the opportunity to get a 1948 Ford f1 3 speed transmission very reasonable, will this trans. fit up to a 1934 Ford sedan? a stock car, or do I have to take it all apart and change out the gears installing them in the 34 case, looking to get the syncro for my Ford sedan, also my 34 jumps out of 2nd gear. thanks in advance for your input ..