its weird, when i search on google "toyota 3rc intake gasket" the rock auto link i provided comes up.
after searching around a bit (not sure what a 3rc looks like) i think i found one
now that looks a whole hell of a lot like the 18rc, cept the valve cover is a lil different.
and rock auto says that a 3rc is 1898cc, thats the same as a 18rc. i bet the real difference in the motors (if the one pictured is like yours) is more in the head passages then anything else.
its a pity i dont know of one locally, or even know somebody with one. now i really want to know if the gaskets for a 18rc will work on a 3rc.
i love useless trivia