Currently I got 17x8's w/bolt-on spacers that give me offsets of 35 front and 21 rear. I want to push the front out a little more and found these.

http://www.maximummotorsports.com/spacers.asp
(the MM Wheel Spacers)

I've read that the non-hubcentric spacers are a bad idea and was wondering if anyone has experience or input on these hubcentric ones. They're made for 94-04 Mustangs, so am I correct in assuming they will fit. I was considering the 1/4" ones which should give me an offset of about 29 up front.

Any drawbacks or possible problems w/having bolt-on AND MM spacers at the same time?

Thanks,

JT