If theres only a few thousand clean z32s left in 10 years(let's just say), Do you think those remaining owners will still be pricing their z32s at 15k? No, they will be looking for 30+ because of supply vs demand. Look at supras, r32 gtrs...etc. msp manifolds obviously arent on the same scale, but because they're not discontinued and sought after, they will be more expensive.