Dar, as you well know I have ny LA .65 converted to Diesel, sometime today I'll put the glow head back on it and run it with a ProZinger 12x7 and let you know what I get. At the same time I'll check the port configuration, if it has two intake ports like the LA .46 I don't see a tuned pipe doing much for it. Also, would you take a look at my Fox .46 vs Fox .50 thread and give ne some advice on that pipe, Thanks I'm a total greeny when it comes to pipes.