My truck has always been tagged and insured and driven on the street. I don't have the big compression but it does or has had .767/.676, 288/292@ .050 cam, tunnel ram, 4.56 gears, I have run a 6200rpm stall convertor at one time. It has a 3-1/2" exhaust system and mufflers and they're at least 1/2" to small. I don't think twice about driving it 100 miles to an event, cruise nite or whatever. Dave