The F21 series are $999 (the original turbo Doug was going to build), this turbo will be an F23 series which starts at $1,299, this platform requires more space to fit the F23 wheels so a casted turbo (non oem housing) will be used and machined which adds to the cost.
For those of us who don't know a whole lot about a whole lot, what's the difference between F21 and F23 and why was the F23 chosen over the F21?
Looking forward to seeing what y'all come up with!