detecting i386 or x86_64 in kickstart

[Jason Edgecombe <redhat@xxxxxxxxxxxxxxxxx>]

Hi,

I would like to have a unified kickstart file for both my i386 and 
x86_64 installs. So I have two questions:

1. Is there some way to detect whether the processor is 32/64 bit in a 
%pre script?
2. Will the 32-bt installer install the 64bit rpms if I point it at a 
64bit install tree?

Thanks,
Jason