anyone still making them for third gens?

Not that I'm aware of.

I have a set of SLP 1 5/8 on my car and they are okay but the head flange is a little short. I have to use a pry bar to get the last bolt into the head, I have to custom make the flange gasket and the crossover pipe for the Y doesn't fit quite right so there's an exhaust leak if you don't use a band clamp. Plus the smog tubes kept cracking and leaking so I just removed them.