I installed the MBRP on my 04 and the dipstick went right back in place. Could not get it out so I said f-it and just left it there. Made it interesting for pulling the old one and getting the new one in, but it fit.
Whichever one you use, have a mirror for the removal of the heat shield, there is one bolt that was a PITB. You can get the turbo shield out, but not necessary, just pull the bolts so that you can get to the clamp. Glow plug controller - I do not remember removing mine, but could have. Also have some sand paper for the coating on the downpipe, mine was a little on the tight side so I had to remove the coating on the neck where it goes into the turbo so that it would fit, then still had to work it hard to get it in there.
Took about 2 hrs with the turbo heat shield remove (45 min by itself).