| As I have illustrated in a previous post, the purpose of this conversion pipe is to allow people to use their stock or aftermarket cast manis in conjunction with a crossover pipe for a single turbo solution. I still can make a full header single turbo mani with the turbo anywhere youd like it. it just costs a bit more to do so.
But for those who already have hi flow casts manis or just want a quick spooling single then this may be of interest to you.  
There are two different material versions of this crossover pipe, 321 stainless tubing and schedule 10 stainless pipe. The 321 stainless version is 2" 16 gauge tubing (1.87 i.d.) and the pipe version
is 1.5" Schedule 10 Stainless pipe (1.75" i.d.). I can do 2.25" 321 stainless tubing also.
The pipe version is $799 and the 2" 321 version is $1199.
Both are two piece units with the pipe version having a vband connection and the 321 tube version utilizing a double slip connection.
For an additional $200 an inconel flex bellow designed for boost applications can be implemented as well. The standard braided flex sections you find for exhausts situations are not really suitable upstream of the turbo. Single or dual external wastegate flanges can be welded on for free but i require the flanges to do so. 
Outside of the obvious, necessary modifications are Egr removal, battery relocation, battery tray removal,Water line modification,
heat shielding of brake lines, efi harness, etc.
The downpipe will impose on the oem ac lines routing at the firewall. if you want to keep ac you'd have to reroute the lines coming out of the firewall to go around the downpipe, otherwise ac will need to be eliminated.
Id recommend converting to MAP. Imho fitting a maf in that area could prove tricky, it may be possible to route the intake and maf into the fender area as well.
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A little more info on the single turbo conversion pipe. - 
