For a single turbo it would be a lot easier to just fab the hot side with the headers facing to the rear. All you original clearence problems would be solved. You would run standard flange pipes from the headers and merge them into one pipe to bring forward to the turbo. If you were going to do duals I could see custom headers for a front discharge but with a single it's much easier and cheaper from the rear.
Earl
flanges are usually the most expensive item in a custom header, so if you re use those ones u would need your primary tubings ($ would depend on how much u need), 2 4 into 1 3" collectors ($ could vary, could find some used ones), and 2 SS 3" V-Bands 2 o2 bungs
Then your Y pipe to your turbo and a turbo flange
And if you dump the exhaust in the front thats alot less expensive since you dont need alot of tubing to get to the back
youll also need wastegate flanges and stuff but if your going to do it yourself there's alot of searching the web for good prices and deal
1. Find another set of stock headers from someone that just did a longtube install.
2. Run the driver side header facing rear ward.
3. Take the other driver side header have it facing forward on passenger side.
4. Run cross over pipe under trans and then back forward under passenger header.
5. Merge two exhaust streams as they turn up to the turbo.
Downpipe routing will probably have to go down in front of engine and then back out under the driver side header somehow.
Would be best to have a custom hot side fab'd up from the get go though.