I wouldn't call myself an expert, but I do have an S14 as well, so yeah I know a little.
If you look on Rimtuck, there are examples of S14's with 10 inch wide wheels up front on coilovers with stock fenders and offsets around +18. But I've also seen S14's on coilovers that just barely clear 17x9+22 RPF1's...
I don't really know how much backspace Fortune Auto coilovers leave you, so I think it's really just gonna be a trial and error thing, homie. But the conventional wisdom or consensus is the 10 inch wide wheels will probably need +12 offsets to guarantee clearance.
So if I were you, I'd grab a pair of the 17x10+20's for the rear and test fit them for the front. A 7mm slip-on spacer should get the job done, if needed. If you like it, just order another pair. If you don't like it, just take them off the front and put 'em in the back, then order the 17x9+25's.
Trying to stick properly sized rubber on a 10+20 inch wide wheel up front though? Oi... Get ready to beat the hell out of your inner wheel well and a serious pull...
costa_rican13 wrote:damn im glad i just bought the megan streets. base ball bat, extended brackets and xxr's meet my car!

For real. See my sig... lol
The only thing I'm concerned about the extender brackets is what that extra 25mm of backspace would do to our suspension geometry? Oh well, it's probably not major enough to even worry about on a street car...