I can't figure out why I would rather mod my Metro than my 2.3 L Mustang powered Street Legal Dune buggy.

here are some good links for D.I.Y.
Air/Fuel Ratio Gauge
Boost controller
Making Turbo Manifolds, Part 1
Making Turbo Manifolds, Part 2
this made me fall out of my chair "Leaf Blower Turbo"