Im new to the performance boating world and my first project is a 1990 Baja 250 ES. The previous owner claimed he did a mild build to it and says it has 415HP. I was wondering what I should look for that would indicate this. The block casting # is 1401544. The heads are 3933148(Open 2V/427 265 122.1cc) It also has roller setup. Like I said, im a newbie and right now i just really want to know what I have so I can go from here. Oh yeah, and its running Thunderbolt IV ignition.