Help please.

90 300ZX NA 2+2

I recently bought some Stillen Headers. But they came only with gaskets....no installation hardware - bolts, etc

What size bolts do I need??
How many?
Any washers?

 

If you're replacing the headers, couldn't you just use the old hardware? Or at least use the old hardware as a guide to buy your new hardware?

 

not trying to have the car down for too long, i kinda need to know what i need before i go under there

 

http://diy.icydesigns.com/article/15.../#.T4iQHdn9xsI

First thing that came up with a simple Google search. If these are direct bolt on upgrades, I imagine they use the stock nuts and bolts. Especially if no hardware was given to you with the headers. Also, Stillen has customer service and I'm sure they would be willing to give you this information if you called.