I bought a kit like this from Mustangs Unlimited. The fit was excellent and I look the look of the turndowns over straight pipes out the back.
http://www.mustangsunlimited.com/it...t&subCategory=Dual+Exhaust+Kits&CatKey=Cougar
I also prefer a turn-down over straight out the back. Although a prefer a shallower 30* turndown, cut parallel to the ground with a perpendicular finishing cut at the back and the rearmost edge of the pipe extending about 1/2" past the bottom of the rear valence.
AndyM,
Just about all header manufacturers will terminate the collectors in a different location, so again, your best solution is to go to a custom shop or make them yourself.
When I replaced the original factory exhaust on my '89 Crown Vic using headers - yeah, I know... who in their right mind puts headers on a Crown Vic... Well, I never said I was 'normal' or in my right mind! LOL!! Anyway, I had the local shop bend me up oversize intermediate pipes and tailpipes (stock was only 2") for $250 to mate up with the mufflers I provided. This particular shop prefers to have the customer provide the mufflers so there are no complaints about the sound level (too loud, too soft, too tinny, etc) afterwards.
Make pipes yourself? Yeah, with straight pipe, a couple of mandrel bent elbows, a chop saw and MIG welder, you can make magic! Although I kinda miss the 'old days' of a
real auto parts store - we'd look in the back of the exhaust catalog (before computers ruined everything for everybody) for 'commercial application' pipes for trucks, busses and motorhomes that'd work - like 2-1/4" or 2-1/2" S-bend pipes with a 4" offset...