4x4taco

Are there any differences in the front calipers on the '03 and '00 tacos? I know most aftermarket 15" rims won't fit late-model tacomas because of the calipers but I've heard this can be fixed with small spacers (1/4" maybe a 1/2" if necessary) on an '03 (specifically talking about the 15" rockcrawlers). I was just wondering if there was any re-design to the caliper between '00 and '03 that would not allow this to work for my '00?