See that big black thing called an expansion chamber.............. The base engine may be very similar to a GG trials but that don't the power characteristic are are anything aloike! There are a lot of similarities between a Scorpa 250 motor and the early water cooled YZ 250 motocrosser too. Don't expect the Pampera to crawl up hills like a trials bike. Maybe you should look at a Scorpa Longride????