Wanted this post to show some of the steps of how we build each kit for the slingshot. Their are 128 parts on a Alpha turbo kit. Here is a glimpse.
Inter-coolers are all hand made and hand welded in house. We buy the core but the pipe and end tank is fabricated in house.
Short vid on how much fun inter-coolers are to weld
https://www.facebook.com/AlphaPowersport/videos/1837731609785234/
We picked Precision turbo's because we have used them in the past and have had very good results. I run them on my high HP cars (800+) with great results. They are also fairly close to us and their turbos are made in house so turn around is fast. When a turbo comes in we break it down. The elbow is welded on the compressor housing and the exhaust housing is sent to the CNC to be ported. We port each turbo to control boost creep. After the CNC ports the housing is again hand ported deeper inside where the CNC can not reach. Below is a vid
A critical part of our kit is the throttle body relocation elbow. Their is only 2" from the top of the Tb to the bottom of the hood. A 90* coupler will rub on the hood and anything else made to accommodate the 2" will be smoshed like the OEM pipe. Making power is able to deliver air and deliver air in a smooth flowing way with little as possible turbulence.
Our elbows are cast out of aluminum. They are then machined in house to accommodate the gasket and tapped for bolts
Here is a vid:
https://www.facebook.com/AlphaPowersport/videos/1868784656679929/
Pipes are made fittings are welded in place and raw parts are powder coated and kit is assembled with all parts needed for install.
But before any of this took place a prototype kit was made and on the dyno to test test test.
That last pic looks familiar... 
and damn nice!
Alpha.
