Rear lights, exhaust, etc.

Hello
Here I am again after laaaanger time.
Unfortunately, I had suffered some personal and health blows.
Since I feel better now, I would like to make my eighth one float again (let it go).
I have a few questions about that.

I have a 91 with 250 hp.
Now I would like to make another exhaust system from KAT which is also H-mark suitable.
Which one can I take?
And which ones are available as a doublex with the end pipes on the left and right, since the previous owner had built himself an exhaust with the end pipes on the left and on the right.

My taillights are a bit cracked and don't look nice anymore, are there any more to buy?


And where and where. Who can glue the roof sky again or. can you do that yourself and with what best?

These were the first questions (:-))

Unfortunately, Markus Scharrenbroch doesn't do anything anymore, I had always taken mine there......

I thank you for your answers, suggestions and help.

Greeting from Biebertal

René