Im preaty much debating between these too suv because i found out that explorers are not reliable ............ the 1997 yukon start off with 255 hp it has a 5.7 liter v8 but im sure it weighs a lot more then the 2000 blazer that has 190 hp with a v6 4.3 voltec engine............. I wanna hit 60 in a least 6 seconds if u can plz post links to intakes........ cat back systems....... headers and a supercharger.... emmisions legal .......... I do a lot of highway driving.....so im also looking for a estimate on how efficient i can get both.... so yeh plz help me choose out of these too... also if u want u can throw a 1996 expedition but i didnt think it would be as good but if u guys give me good enough reasons to i will buy.... o yeah 1 more thing the yukon is also 2000 cheaper then the blazer