Hadn't thought about hiring a tig, it's not a bad plan. I'm not sure how long it'll take me to learn though and I do rather fancy having one anyway, plus it's pay day soon
Right: Progress report.
Tonight was fun. I started by nearly wiping myself out whilst turning the alloy neck that will connect SC to IC. Not sure why but the tool dug in and the work piece spat out of the lathe and bounced way up past my head

More care needed!
Luckilly it didn't do me any harm and I had spare stock, the next one worked out just fine. The neck is 57mm id (a bit small but space is tight) and will take a 60mm id hose. It's going to be moulded into the glass/carbon outlet. I figure this is easier and more robust than trying to make the duct outlet the correct size and shape in fiberglass.
Anyway, I started by bolting a flat alloy flange to the SC outlet (the one I origionally intended to use) , I then used hot melt glue to fix the outlet neck in the right orientation and position in the car (neck glued to flange). I also marked out the position of the troublesome chassis rail relative to the flange.
Sorry no picture of this, it was a pain in the ass to do (glue wont stick to cold ally

) and I got so mad I forgot the pics.
Next I removed the plate complete with neck and transfered them to an mdf board, drew round the plate, glued the neck to the board (well a little board on the big board then drew round that). I also marked out the chassis rail on the same board with dowel, waxed the board with mould release wax (any wax would do) to stop the wet clay warping the mdf, I doubt it'll work but it's no big deal either way. Next a frame of ally welding rod and hot melt glue was built to support the clay, this was loosly filled with scrunched foil to save on clay.
Next the fun bit, the clay, this is messy and made me feel like a big kid. What is amazing is how quickly you can go from lumpy mess to a beautiful organic looking form with no kinks so it should flow really well. For reference incase anyone else fancies having a go that used about 2kg of clay.
That's gone to dry for a few days.
I dread to think how long this would have taken me to beat from sheet metal as was the initial plan, I guess days and it would be a nightmare because of the constricted space for measuring/fitting.
So there we go, lost clay fiberglass moulding seems to be a very useful technique so far!
Two more pics: The completed (tacked with a toy mig before anyone rolls their eyes at the welding

) SC mounts double as engine mounts, these were initially triangular (a pair, front and rear) and the plan was to slip the SC into the triangles, no such luck! What could have been very simple has required an additional: 8 turned fittings, 4 profiled tubes and a sheet metal bracket! The mounts are now a 3 part assembly, a bottom H, a top rear bar and the front top frame, recessed cap heads hold the tops to the bottom H.
And the mounted SC. It almost looks 'stock'

Note the offending chassis rail accross the outlet. The steering linkage only has 1/4" to the top rail of the front engine mount.
