Why don’t you contact Beltech and ask them?
Or go to Beltechs site and search the part numbers to compare?
Comparing the description between the two part numbers only show that one uses “Coil spring” for the front suspension lowering, while the other uses "strut drop.
I agree with Mustangman’s suggestion to ask Beltech directly.
The 438SP doesn’t come with the front coil springs
And neither set comes with rear leaf springs