I know this may sound like a blasphemy, and probably it is … but say I want really badly to have a couple of Spanish Ships of the Line. Say the Santa Ana and maybe the Santisima Trinidad.

I’ve found them in white metal and in 1:1200 scales (here), but they are very expensive stuff.

So here is the blasphemy: If I just got one of the current Ocean-Class French Ships, re-paint it with proper colors and put a Spanish flag on it, would it be much difference between it and a ‘real’ version of the above mentioned Spanish ships?
I’m really good at painting and crafting and even doing small parts from scratch – I’ve been doing it for airplanes and tanks for decades, I’m just new to ships. Could I do some minor transformations in order to make one of them out of an Ocean-Class? If yes, which ones?
Regards!