I just think the Cat Converters are just the tip of it all. Then an ECU and all related wiring. Then a "compliant" engine with all of the related sensors, evap control...etc etc. THEN, you get to go get it smog tested every 2 years! (At least in CA). What do you do with something simple like your gas cap?
I'm sure this is a windfall for many hotrod builders, but I guess I am just still trying to understand....
