Chris@AMS wrote:You do not need to run springs with the V2 cams.
with billet cams, they are new camshafts, with regrinds, you may have to machine your camshaft bearing cap/towers, you have to speak to the manufacturer of that camshaft to see if they reccomend it or not though.
one example is hybridka.com's regrind cams require milling the camshaft bearing caps unless you upgrade to their sold lifters which are adjustable.
good camshaft info you might be interested in reading