New Hamilton 103# 24v valve springs. Sold mine but have a buddy with an extra set.
New S300 cast 64mm wheel and cover. Slip on compressor outlet. $150 shipped.
1.1 turbine housing for the 83/74 wheel with an hx40 flange welded on it for the outlet. Around 2 hrs run time on that one also. $130 shipped
New 3.73 D60 gears. USA Standard Gear. $150 shipped.