Technical ford 32 frame

Hi Guys
i'm starting a new project i will have a 32 frame pinched for a 1928-29 roadster body , model A cross Member front and back and 1933-34 X-member , now i'm thinking of a 4" drop axle front ,i have seen 3 different sizes , and don't know which one will work for me 46"-47" 48" which one you usually mount on your project?

 

I built 100's of deuce chassis and used 46 or 47 inch axles. Rarely a 48. I used a lot of Super Bells axles and in the last 10 years used the 47 inch axle from Roadster Supply/So-Cal. It's up to you?

 

I totally agree with Gary, you can't go wrong with experience. HRP

 

thanks a lot for the input