today i installed the msd 6 al with a 7000 rpm pill in it.it really was just an r &r of the 6a.they both hook up exactly the same.also ground off all the paint and rust on the roof and etched it then primed it up.so now it has a grey roof.drove it around the nieborhood.it runs really good now.no more flat spot.stopped by my friends house to see if he wanted to run them ,he has an original 69 z/28 camaro that he has a 454 in it.he didn't want no part of that ****.took him for a ride he said the dart pulls harder and is faster than his chebby.didn't find many victims,played around with a nutlass with a 455 walked that thing like it had an anchor draggin the ground.arrogant dipshit thought he had an easy win .thats why they call them slowsmobiles lol