I'm stuck between both the gen2 tekin and the schuur speed 17.5 motor. I have a viper 17.5 motor in my truck, it runs good, but it seems like I run hotter then everyone else, no matter what. it makes good power, but I think i need something with a vented can. I like both the schuur speed and gen2 tekin, but I'm leaning towards the schuur speed after reading coyotes comment.