I might be needing a new starter soon. What is the difference with the starters?

Looking at the starters here the heavy duty one is the same for Federal and CA which is F5000-11370 and then there is the CA with trap one which is F5000-11373 which is $50 more.

Does anyone know if you can use the F5000-11370 with a trap? Looks like the solenoid is on the bottom on the 11373 vs on the top on the standard ones.

Anyone changed the starter out on their 85 with a trap? Thanks.

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85 300D Turbo