I'm restoring and building a 67 Mustang. I have to replace the outer and inner cowl panel. I have repro inners and an outer I cut out of another car. Any tips on installing this? This is the first Ford I'm doing, done a lot of Chevys though. Just never got in this deep with body work. The car will be running a 289 putting out about 325hp and a T10. Haven't chose rear gears yet. It's going to be a street car and it's going to be driven.  

get yourself a really good spot weld cutter. you will be very very familiar with them when they are done. Blair makes a decent one that Ive used. its got a small pilot pin on it and it resembles a  1/4" holesaw