I came across this really nice Flaring tool while on a general search for line & fittings

http://store.fedhillusa.com/flaringtools.aspx

The video shows exactly how simple this is to use & execute perfect flares.

mms://205.178.152.122/1210413/video4.wmv

Here's the best part -

Quote
... We offer a brake line flaring tool rental program for DIY'ers. With purchase of tubing you can rent a 007 flaring tool with appropriate dies. ... You must have a good vise mounted to a sturdy work bench to operate the tool. ....


$25 per week! (plus security deposit)

That's actually cheaper than buying a 'cheap' flaring tool!
Certainly makes good sense (to me anyway) if just doing a single truck.

Please note that I have not used this personally so can't give a true endorsement to its proficiency - just came across it & thought it would be interesting/useful to share. It certainly appears to give (almost) idiot proof results!

Of course the usual disclaimer that I have no affiliation with this vendor or product.

'51 Chevy 3100 Truck - OEM 216 Engine; three speed column shift transmission
6 Bolt disc conversion with dual master/vacuum booster
12V alternator conversion.
235 engine in waiting grin