first of all, the idea of using 8 turbos for each cylinder is completely inefficient. there would be too much loss in heat due to the fact that there is so much gap between exhaust pulses.
if you do run turbos on the 289, run two. one is not very efficient for a v8, since there are two sides that the exhaust comes out. the 4-banger has only one head so the turbo is put real close to the single head. a v8 needs one tubo for each side of the engine. also, the turbo is powered by the expanding gas from the exhaust, so the turbos should be right up against the head, or really close. when you run a single turbo one side and a cross-over pipe from the far head, the heat from that far away head disapates on the way over to the turbo, so there is a lot of potential boost that you lose.
in my opinion, sell the turbos to someone with an audi and use that money to buy a turbo better suited to your application.
The T4 is a much more common setup, but its becoming an old school design.
Garret Turbochargers is working on a few new turbos:
one that has two different sized impellers conected to the same spool
another that has flaps all along the housing that can adjust the amount of flow
Dont give up the idea of turbo-charging, just find out how to do it best. If someone gave me a fuel-injection system for a v12 Ferrari, Id like to use it, but it would not be an efficient setup for my v8. I do wish there were more turbo v8s than supercharged ones, but that has a lot to do with marketing and copying what others do
