vr camshaft upgrade

[ripcurl]

i have a 1994 vr v6 manual commodore, im thinking about installing an aftermarket upgraded camshaft.
firstlly does anyone know whether my engine is a series 1 or series 2???
and how hard is it too actually time the the crank and cam because it runs on a timing chain rather than a belt???

any comments or information is appreciated

thanks in advance

[VrWagz1]

Check the the v6 development section, here is for more general banter on stuff like the window dosnt roll up, my glove box fell off, i cant find the cup holders and so on.