yep the mongoose i had was probably the best quality exhaust i have ever owned or seen and i have seen some exhausts in my time,some costing double if not triple what cpe charge and not better looking quality. in the good old days it was like a battle out of castle,collins,turbosystems and severn valley which company built the fastest cosworths, these companys were pretty close to each other. it would be interesting if they had all been going today in the internet age