[speedy00]

Contemporary Cobra all coilover suspension... Here is what I did. First engine I had was a 428 Cobra Jet. Not bad, car was fast and nice till it dropped an exhaust valve.
New engine was a 427SO with 428 crank, medium riser heads big cam 750 single 4 barrel... When i installed the engine, lots of low end but died above 4,000 rpm very disappointed.
After thinking about the problem I did this, I added parallel mufflers under the car and took exhaust behind the collector and re- inserted it after the muffler.
The car sounds great now it screams to 6,000 no problem.
It completely transformed the car! I have had the car for 20 years and this exhaust has been on for 19 years.