Hey guys i have 95 Blazer 2 door 4x4 and wanted to know if these 17" C4 ZR1 rims would fit my truck?

(4) 17x9.5" CORVETTE C4 ZR1 Style OE Replica Black with Machined lip aluminum wheels rims 5x4.75" lug pattern (same as 5x120.65 mm), +38 mm offset (6.75" backspacing)

or will C5 Rims fit? I need help and soon cause i might buy the C5 rims if they fit.

Did you read this?

What tires can I fit?

Just read that post and its about lifted trucks and 31's, my truck is lowered 3" and I'm trying to rock 17's from a TA or Staggered from a Vette.

I ran 2002 Camaro SS 17x9 rims on my 1996 4-door 4x4 for a couple years (pic in my signature). Depending on what size tire you're putting on the rims you can do it, and you may not have any rubbing issues. Pretty hard to say definitively whether or not you'll run into issues.

Should I just run the 17 inch Trans am or Camaro 93-02? I don;t want to loose a lot of power to the ground but still want to maintain style.

The size of the rim doesn't matter. What matters is the size of the tire. A 28" tall tire on a 15" rim will have exactly the same rotational speed and power to the ground as a 28" tall tire on a 17" rim.