GM exhaust pipe sealer substitute

[SMoon67]

I'm installing a new stock exhaust system in my 67 SS350 restoration project I've been working on.  I see that the AIM calls for a grease based sealer PN 9985020 at the pipe joints.  Could someone tell me a good substitute for that?  Thanks.

[RamAirDave]

Gardner sends a tube of regular clear silicone with their systems.

[JohnZ]

Most auto parts stores have it, called "muffler sealer" or "exhaust pipe sealer".

[sdkar]

Where was the sealer put?  On the pipes at the exhaust manifolds?  At what connections?

[Pex68]

Pipe to muffler connections.