Wastegate, blow-off?

Hello the other day I saw in the net that, I think it was Trollspeed, a Wastegate offers for the 93. I myself have a 93 Aero of 04. Now the question: Does the 93 already have a Wastegate or Blow-Off and if no one of the two would be profitable to install? I myself lay but have read several times that Wastegates should probably be superior to the Blow-Offs. Would thank for information PS another question: Does the 93 like the Vectra also have an electric accelerator? MFG