It's possible to splice the lines without dropping the subframe. I did it, but I think it added more time and difficulty than it saved by avoiding dropping the subframe.
I bought my 6mm line, fittings, unions and bubble flare tool kit from Performance Tool and Supply (814-362-3221). They are called autopartsmart on ebay. If you call them ask for Kevin, he is familiar with all the parts you need.
http://cgi.ebay.com/ebaymotors/Metric-ISO-Bubble-Flare-Master-Tool-Kit-NEW-L-Warranty_W0QQcmdZViewItemQQcategoryZ43995QQihZ024QQitemZ370047902002QQrdZ1QQsspagenameZWDVW
The stuff from FedHill is better quality, but much more expensive.