LaRocca installed mine.Did a real hack job. Scratched polished blower,did some other damage,ran like crap.They could not care less. I would stay away from them.
Probably none. But everyone(MGW & Tremec) says do not use. Generally,
instructions are for a reason. Also, the stops are not suppose to be present..removed.
When I was looking for a set-up I started the same thread & appreciated everyones comments. I heard another GT's exhaust (live) and that helped me decide. The same threads over & over? It works for me.
The system that you like is the best. I'm running Borlas with a Bassani mid.
Go to a car show or cruise and listen to a few "live" samples.Personally..they all sound good(and different)
I used Preston "FLUSH" for the cooling system years ago on my Bronco II. I damaged the freeze plugs & the heater core. Careful..read instructions if you
use this stuff.:nono:
Maybe tar & bug remover. Forget gas. And I don't know how safe goo gone is.
I think I would soak a rag in very warm water(hot but don't burn yourself). Apply it on the gum to soften..rub very gently.