Always install a fresh set of springs that are the right pressures for the cam you select, never run stock old springs on anything other then the stock old worn out cam lol. You won't need much spring pressure to run those 2 cams i mentioned, even with the larger summit piece, Comp will tell you what springs to use with there cams. You should be fine with the stock rockers/pushrods, But keep in mind they are old, if anything, replace the pushrods with a heavier set, crane/comp sell some.
