I think you guys are forgetting a lot of stuff. To do what is suggested you would need to move the coilpack, buy ALL the 87 accessories and powersteering, passenger side header, DP, turbo bracket, oil feed and drain, drill a hole in the block or oil pan for the drain, wiring for the relocated alt., and other stuff.
Trust me, the LT 3" DP fits fine, there's a ton of clearance it's not even close to interfering with anything. It's a 3 peice with thick flanges, no leaks ever, took less than 30 minutes to install. The bend coming out of the turbo is gradual, not sharp and there's a ton of room. This is not a problem. The problem is getting someone to build one that will use the stock wastegate. That's the only shortcoming of this pipe. Again, clearance is not an issue with a 3" TH style pipe.