here are some pics of the install of my 4 inch diamond eye straight pipe for you. i had to cut the bolt sticking out the fire wall holding the silver firewall stuff. and mine ripped the silver stuff but you can stick it right back
downpipe lossely clamped to turbo
bottom of down pipe
the bottom half of down pipe loosely clamped down
a look at the clearance of the tranny crossmember and tranny
then hang the tailpipe over axle and muffler or muffler delete(mine was the muffler delete)
then i had to cut the piece to fit between but you may have a perfect piece, i have a reg cab, long bed and none of the pieces fit right so i had to cut
heres a picture of over the axle clearance
here is finished product after i installed the rest of the tail pipe and tip.
then go back and adjust for clearance and tighten clamps starting with the turbo back. then start engine and you can cover the tip with your hand and you will be able to hear the leaks better then go and enjoy the sound.