96 Cobra rims to 05 bullitt rims

I have a 96 Cobra with the stock 5-spoke 17X8's with 245/45/17's.

I recently picked up a set of bullitt rims of off an 05 GT with 235/55/17's.

Question is are these compatible? Do I need wheel spacers, if so how much? and If I really wanna use the thicker sidewall tires; how much will it affect my speedo and driving characteristics?


Just put a new Motor in 'er... been 3 weeks already got 1k miles on it!! WOOOOOOOOOO! :nice:
 
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