Juan Ruiz on this board has the Protomotive kit, I think. They start (without an intercooler) at about ten grand. I don't know anything about Speedforce Racing, but you're obviously going to be increasing your risks blowing a small engine that wasn't initially designed for it. A stock 3.6 with low miles is going to run like a tank, pretty much, and when you get bored with 250-300 hp, you can add a turbo to the 3.6, and
really kill your 915.