The small resevior servo unit for various GM vehicles listed below.
The one we have been able to supply is Type A.. with the variable ball hole platform... as in whats shown in the main illustration.
There is a Type A & Type B on these in real life.. check where the chain connects at the front.. both are the same otherwise but .. looks like an adjustable one (Type A Show on the upper picture) with different multiple hole spacing or the single hole as in type B- Choose.
Corvette 1990 - 96
Camaro 85-92
Chevy Trucks 83-88
Firebird Trans Am 85-92
Pontiac GP & Full Size 84-87
Fiero 84-88
Pontiac Transport: 90-91 (like Stewies...)
Most mid - late 80's Cadillac & El Camino
Type A ABOVE and rear view
Type B ..note the single pull from hole