z6 has 125 HP
they flow better at top end than the y8.
they are better to P&p.
it must use the z6 dizzy
Y8 has 127 HP
flows better at bottom end than they z6 due to the swirl on the intake ports.
has quench pads so it resists detonation better.
stock oil pumps give out easily.
you can basically mount any d series dizzys to it besides the z6 ones.
y8 intake manifolds are alittle better than z6 ones.
theres more differances but cant think of them right now.
but it is pretty easy to swap in your car if your car has a d series engine.