Ok, I saw your PM and replied...but after seeing the two threads I'll toss out some more info to help you out.
I thought you had the MySteed boxed upper intake already. Nathan is no longer making them to my knowledge.
There are some questions about the set up that can't be answered directly.
Which hood you need to cover it will depend on which boxed upper intake you buy. There are two points it may hit...the pulley and the plenum elbow. Mine is the lowest profile and fits under the ABC Exclusive 2000R hood, but I had to trim the back edge (along the firewall) to clear the plenum elbow. It cleared the stock Cobra blower pulley, but it was tight. Some companies hoods don't rise quickly enough, so they will hit the pulley. I do not make the intakes anymore, so you'd have to find a used one. I know they change hands from time to time, and I've lost track of who has them now. The SSM version of mine is a little taller and has shown higher IATs. I know they released a short version, but I haven't talked to anyone who runs it so far.
Morana claims to make one. It has never been on a motor or proven to run and just by looking at it I can tell you it's not something I'd put on a motor.
For fuel rail, a proper M112 intake will use the stock rail without any modification.
If you need, I can set you up with a tuner in Tulsa. If not, I have delt with several in Dallas (in person) for the V6 M112 tuning.
HPP in Lewisville did Rico's silver '99 (it was a Mach 1 look-a-like with one of the first set ups I sold to the public).
Be aware: There are SEVERAL knock off versions that were home made copies. They are usually not of good quality or proper design and my destroy your motor due to improper materials, poor airflow (uneven to the cylinders - so it can't be tuned properly) or they will create an over and spike your IATs. Only buy an intake from SSM (new or used) or one of my old ones. Ortiz Performance out in Texas has been authorized to create intakes with my design. They just started making them to meet the renewed demand for them.