Is it possible to shorten the stacks from their existing heights ? Is it a matter of simply getting them sawn off, or would one need to buy a new stack altogether ?

I know most of you dont like Schnieder but when they first got their specialized freightliners that hauled flatbeds before they sold to maverick they sawed off their stacks.

you can cut them if you so desire.

Just remove the stack from the muffler (if it has one) and cut off the stack down by the muffler end and re-clamp it all back together.
If it has straight pipes (no muffler) remove it at the elbow, and then cut it at the elbow end.

I don't recommend chopping the top off because its hard to get a good clean looking cut, the chrome sometimes discolors, and the exposed unprotected metal rusts and the "rust water" runs down the stack behind the heat shield and makes an ugly mess.
One way is quick and easy, but the other way looks better.

Just don't cut too much off, or you'll have to get the pipe strecher out to fix it.

Measure twice, cut once. Using a metal chop saw works the best. It leaves a nice clean cut.

I always need to cut my stacks and like others have said, a metal chop saw works great.

I don't think you can chop the stacks on the new 2007 EGR motors. The tip is an integral part of the system.

If you know someone with a 10" table saw you can buy a metal blade and have them cut it perfect.

You can also do it with a skill saw and a metal cutting blade. Take 3 pieces of wood and nail them together to make a sort of miter box to hold the pipe. Nail a small piece of wood to the top as a guide to put the skill saw up against. Make one cut then keep turning the pipe until you make it through the whole thing.

As a contractor and as a man that's familiar with cutting metal I got to say that's so g&d D@%M hilly billy style it's hilarious ..............but effective! :lol: :lol:

LOL, thank you Ricky Bobby.

2 more notes if you do go the skill saw route. Make sure you set the depth of the saw blade just enough to cut through the pipe. If your going to cut off like 6 inches total then just cut off 1 inch to start as a practice run.