For a full range cam it is worth it no modifications needed to get full potential a port and polish with a dremel will help out its a step above stock and it doesn't require any hp parts springs and or valves they can be used with it to help out but as for any real mods not necessary if you decide to do it don't use there specs for valve clearance any cam will have valve noise unless you use hd springs which will help quiet it but with there specs it's pretty much slapping the rockers onto the valves if you want a little boost for a low budget get one most of us start with the s1hc but if you wanna get into more work more performance u would require head clearance and a bigger cam
yeah thats why i was asking if the cam can be used with stock valves because the valves i got are oem spec. wish i would have just got the black diamond valves kinda of to but didnt realy plan on getting a cam but its kinda of like "your right there why not" lol