would 14x9 with -13 offset be too much? or would it fit
a 9" wheel will actually measure 10" from the outsides of the beads. -13 offset (i assume this would indicate 13mm) if I'm correct about this that would convert to 0.51". Meaning that wheel would have a 4.49" backspace.
So that means... Yes, as far as backspacing it will fit (the biggest problem finding wheels for the ra64's and ra65's)
from what I've read on the wheel fitment forum, the stock gts rims have a 4.625" backspace. Being 7" wide (actual 8" from outside of beads).
so... the wheel your looking at would stick out (outside lip of rim) 1.865" more than a factory gts alloy wheel.
will the width interfere with fenders? Grab a stock alloy and a measuring tape and figure that out in regards to your suspension height etc.
Now you can start playing with tire combos as well as tire stretching if you're really looking to play the "fittment" game.
If I made any mistakes somebody please correct me. I've always understood tire dimensions. I've been learning more about offsets, tire stretching etc. because I've got a 15 year old son thats in the process of slamming, tucking, cambering/ tire stretching his daily driven 92 integra, currently on 15x9" xxr 002's on a vehicle that the factory mudflaps sit about 1/8" off the ground. (not really my bag/style, but that's my boy, and I'll do my best to help him build that weird shit he wants)