The base for single CPU kernels (different archs) and SMP kernel is the same. There is only
kernel-2.6.11-1.1369_FC4.src.rpm
for all supported targets.
compiling the sources with
rpmbuild --rebuild kernel-2.6.11-1.1369_FC4.src.rpm
results in many kernel rpms, among them the smp version.
greets Boris