Got a Banks Sidewinder for an 85 6.9l E350?

[85Quadravan4WVO]

i missed the boat on getting a kit from banks before they stopped making them last year. anyone know where i can find one?

i picked up this project van last year with the long term objective of running a 4WD WVO van. it has become obvious that it will be a much longer term project than i anticipated. the problems have been continuous, it's seriously underpowered (doesn't help that the block is cracked and the tranny is failing. it's been beat on hard and obviously neglected, but not a complete lost cause by any means.)

I'm looking to take the low buck route and just replace the engine with a used 6.9. out of an 86 F-250 i found recently, but i need to find a line on a turbo asap if i go this route. i've been looking at the Banks sidewinder kit for a while, but haven't been ready to drop the money on one. been stuck dealing with a long list of other problems. now that i am closer to replacing the engine, i'm finding that the banks kits are no longer available. any help in locating one would really be appreciated. I'd like to make it up the hills without having to take the shoulder all the time.

thanks,

j