I'm leaning towards rectangular or ovalish:
http://www.mufflermall.com/ind...y=USD
http://www.autobarn.net/raunextip.html
http://cgi.ebay.com/ebaymotors...ories
for this:
Tell me what you think I should do thanks!
http://www.mufflermall.com/ind...y=USD
http://www.autobarn.net/raunextip.html
http://cgi.ebay.com/ebaymotors...ories
for this:

Tell me what you think I should do thanks!