I have been asked several times in the past on how I did my short bed conversion. For that reason I started to compile a document about 2 years ago, which I finally completed today.
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A friend of mine has got an 06 Sierra EC 5.5' bed truck. Will take a look. The way I shortened the frame does not allow you to shorten it much more due to the length of staight overlap of the frame sections.Since you've BTDT, do you think it would be possible to even try something like this with a 5.5' bed like the CC 1/2 tons come with?
Should work the same, the frame on your 2008 is the same as the frame on 2001-2007 trucks. I just did this conversion on my truck aswell, took a lot of time but it was well worth it!will this process work with a 2008 2500hd lmm regular cab ive been wanting to shorten bed to make it short bed for a while any help greatly appreciated