I have a 98 blaster it is bore .20 over with a forged weisco piston and a high performance gasket kit.it says the gasket ket adds 1.2 hp alone.and I was told a blaster has 17 hp stock around.it also has the tores system unhooked and I think it has boysen power reeds that's what the guy I bought off said it put the reeds in it.i just rebuilt the engine though