Upgraded 47 vs 48

[AMcCormick]

I am looking at buying an 03 with according to the vin number eight digit is "6" would have a 47RE. I would be having Left Coast Diesel install a built GB transmission. What am I giving up by having the 47 vs the 48 after the build?

 

[TCDiesel]

You can upgrade the 47 to 48 Just few More $s

 

[AMcCormick]

Thats what I figured, thanks