How many types of starters are there for a 1983 305 Chevy engine?

Depends on what the 305 is in, a 305 camaro engine needs like a 9 tooth starter because the fly wheel is 12.75 inches in diameter with 50 some teeth. A 305 in a Chevy half ton will have like a ten tooth starter for the 14.25 inch diameter flywheel that has like 60 some teeth. All 305 engines before 1986 are the same they did have different flywheels for what ever Chevy put them in. 1986 and newer 305's had different cranks the flywheel bolts up different on a 1986 305 compared to a 1983 305.