When I did mine, I renewed all bolts incl the sump bolts!
Bit OTT but they (genuine ones) were cheap as chips.
Make sure everything is spotless.
All the pics from my rebuild thread have gone, thanks to Photobucket, but they did show the re-assembly.
Follow RAVE for the procedure, incl adding a few strategic runs of RTV before the sump goes back on.
PS When you start up after your rebuild, allow the engine to gently warm up but dont allow it to sit idling for ages, there can be a risk of oil starvation.