Fitting a cam in a LS2

[flyingdutchie]

I have been suggested a parts package for a cam. Suggestion is to also fit a ported LS2 oil pump. Can anyone tel me why a ported oil pump should be in the package? Also a new timing chain and lifters is suggested. My timing gear can stay as it is.The engine has done o more than 2000 miles.

[flyingdutchie]

It has LS1 manifolds on now. Converter welded a 2,5" pipe to it. A have a set of LS7 manifolds which wil go on now.