need a starter for a 402, will anything else work?

[ofnaman]

My '70 c20 has had starter issues since I bought it. I think someone put a wrong starter in it (sounds like maybe put a wrong tooth count starter in it.). It has an auto trans with a 402 engine. The flywheel is in good shape. I cannot find a starter for this locally. The local parts guy's have one for a manual trans but not an auto. Are they the same? When I call summit racing they say they are the same, but I wanted to check with you guy's. Thanks.