@D_C: that's right. I controlled that when I lowered the car.

So I'll go with that plan.

I just wanted to know another thing. Some people said, that I should use other pistons for some more compression. Are there any with just slip in and are usable with my stock parts (like crankshaft, conection rods...)

I thought that I should use new bearings and such and for that I have to take the engine apart. And when theres some money left I could use new pistons. But they have to work with the e-street heads and my stock parts.

But the pistons are not in the plan yet.