How much clearance between Hardstreet Slimbags and stock pipes?

Hey guys...

So, after 6 [email protected]$([email protected]! Weeks, I FINALLY received my Hardstreet Slimbags yesterday. They look awesome.

I'm getting ready to install them, but I'm not sure how much clearance to leave between the bags and the stock pipes. I am eventually going to install the Cobra swept pipes, which I know will give more clearance, but for now, I'm still running the stock pipes.

What is a safe minimum distance I need to keep the Slimbags from the pipes, so they don't melt them??

Thanks in advance!