Page 588 - Makino,Tsutusi.DictionaryOfIntermediateJGrammar

To suru to is similar to to naru to in that both express a provisional idea.
However, S to sum to is used when S is hypothetical or uncertain, whereas
S to naru to is used when the speaker / writer takes S to be true or a reality.
Thus, to naru to cannot be used in the hypothetical situation in [I].
v* C xh.
[I] +E~~~B&TZ /*t&5t1 PL~~BBEZ-CW;J.,
(Suppose you were to build your own house now, what kind of
house would you build?)
On the other hand, to suru to is unacceptable when the situation
involves an actual event, as in [2].

t6ri (ni) %GI (CZ) n.

(in) the same way as; (in) the
the idea that S.O. does s.t. or s.t. way; as
takes place in the same way as s.t. [REL. yonil

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Q-x%l LL

(I did it as the manual shows (lit. in the same way as the manual), but
it didn't work.)