Yeah, the gap would definitely vary depending upon whether the engine was running boost. But for a standard engine 1.1 seems to be the correct gap. 1.1 is the gap recommended for the 16v. I was unsure whether this would vary for the 20v, as a result of different comp. ratios or other differences but it seems that the gap should be around the same.
As for the engine itself, its the silver top. I'm not really going to work it much. It's running some aftermarket headers 4-2-1, but I'm unsure as to what manufacturer. I have popped a K&N pod on. I am interested in grabbing maybe just a couple more horses.