i'd strongly reccomend using S14 spindles too, this way you wont have to adapt anything, and!
you will have shorter steering arms,
you will have better wheel bearings.
it means you will have to use S13 offset wheels on the front, but these are very common. you could use the same wheels on the back with some bolt on spacers too.
and do a search using google, there some good if hard to find info on this topic.