good work mate..
you got same parts as me from the zisco crew, they are awesome manifolds(mine not cracked and its been thrashed at 1.6bar)
the exhaust I got the original style when keith first did them, but if mines anything to go by on boost its such a nice sound..
plenum will be good to matey, make sure you get Intercooler piping same size as throttle body.(you be surprised how much better she is top end).
what turbo will you be running?