Stus-List Conduit Size for C&C 30 Mark 1 ?

[leewardrail hotmail via CnC-List]

Hello All,

I am planning to install conduit in the mast of our 30 Mark 1.
Unfortunately I am hours away from the boat, and need to buy the conduit

Would 1.5" PVC Conduit fit ?  Would 1.5" run without obstruction all the 
way to the masthead, or is there something at the spreader that would 
get in the way ?

I prefer 1 1/2"   1 1/4" is about the minimum I would want to use.

Thanks !