'The Rod Shop' 1971 Dodge Colt Station Wagon

The Weslake heads on 'The Rod Shop' 1971 Dodge Colt,

Were equipped with 2.02" and 1.60" Chevy 11/32" Stem Valves.

At the 1971 Indy Nationals, the 1971 Dodge Colt was not 'tweaked' yet, as they
were still working out the 'bugs'.

And the Fuel Injection utilized shot-tube 'sliding-valve' Injectors.

Yet still ran 10.40's @ 130 MPH in 'D/Altered'

That Colt Wagon 'screammmmmed'

When did they stop running the W-G head motor? Why did they stop running it?

Did it post some wins with that motor combo?