save some money , you dont need uprated rods , they are good well over 500 mate.balanced and arp bolts mind
Swedish plenums are a fad , not my mate but another well known mapper /tuner dont like em either ,reasons i forget but uneven mix comes to mind.
Would defo long stud it though, money you save on the rods i would invest in the long stud mate.

Hoping to have my new engine in for june/july time , but like your self no rush and no quater spared , thinking uprated box now too.