First post have a question

[cfacundus]

I picked up a 64 swb fleet side with a 350 swap. I have been de-rigging the engine compartment - adding ac - serpentine from 92 c1500 and a few other things. I plan on doing power steering and brakes next but I have a question. This truck is 5 lug front and back with coil springs and trailing arms in the rear. It still has drums . I was under the assumption that all of these were 6 lug stock. Could this be oem 5 lug or was all of this changed by the previous owner? If it has been changed how can I tell. Are there part #s on any of the front end parts? Thanks in advance.