RE: General questions!
That happened to me a couple of times where i broke the wire off, and you can use any wire to replace the antenna wire, as long as it is copper (not aluminum). Go to radioshack and find the thinnest wire there. That should be able to fix it. The smallest wire may not fit through the straw, so you can try and find a bigger straw or you can just go to home deopt, and get a wire that is stiff and stays in place when you bend it.
This should be a decent pipe for a good price. $15
http://cgi.ebay.com/NEW-OFNA-BLACK-TUNED-EXHAUST-PIPE-ASSEMBLY_W0QQitemZ120414249956QQcmdZViewItemQQptZR adio_Control_Parts_Accessories?hash=item1c093fa3e4&_trksid=p3286.c0.m14&_trkparms=66%3A2|65%3A1|39%3A1|240%3A1318|301%3A0| 293%3A1|294%3A50
Just type in ofna pipe on ebay, and you can find a couple of good deals.
I have a Sportwerks Mayhem, and the brake problem is the linkages are not set perfectly, and you might have the 2 screws that holds the pads to the differential to tight. Just play around with the linkages until you get a perfect setting with the carb and the brake.