What is the highest HP people have put in a Vanagon with an Automatic Transmission. I think the SVX and WRX are around 225 horsepower.. and maybe they go more often into manuals... but has anyone put in 300 horsepower? or 400 horsepower?... there were 911 conversions ... but I think they're about 247 horsepower (at least for the early 1990's)