I have an '89 350 TPI motor, and one of my runners is damaged. Can I replace it with either a left or right runner set? They look the same, but I haven't tried bolting them up yet. Also, are the '85 305 and the '89 350 TPI intakes the exact same? Thanks.

 

Nope, the runners are different. Near the top the small tube (EGR) is in a different spot.
The bases are different from 85 to 89, the center 4 bolts are different angles and 85 has a cold start injector. I think the plenum is the same.

 

Are the 85 and 89 runners the same? Thanks.

 

The right one is, the left one isnt. The difference is the cold start valve. That could always be plugged or capped off tho.