I have a stock 87 GN with 37k miles. I had planned on leaving stock. Brought it in to our shop yesterday to do a couple of maintenance items, plugs, wires, exhaust leak. Found a crack in the drivers side exhaust manifold welds on one of the tubes. Factory weld. The muffler is bad as well. Now that it is apart I am thinking a few mod's might be ok. Not sure what to do and I know that sounds stupid. I was thinking a little extra money for a little extra performance might be in order. I have owned an 89 Turbo T/A as well, stock. Never done any mod's on one of these cars. Any suggestions would be great. I could just weld the cracked manifold and put it back together, put a muffler on and call it quits. Interested in what could or should be done if I were to spend $1000-$2000 in parts. Sorry about the length of this post and thank you for any replies.