Finished preparing my modified turbo for this year's build. Basically it's a Garrett T28 with a carbon seal conversion for draw-through.
The compressor housing has been modified to accept the SU HIF44 carburettor which I used last year.
As a comparison to my old T25, at 7psi of boost, this turbo will deliver 20lb/min of air whereas the T25 would be struggling to deliver 15lb/min.
Next stage is to make the new outlet pipe which will incorporate a 60mm carbon-fibre end-can.