Choices Of Sealant When Installing Exhaust Studs? (a Mopar newbie)

Have a 70 Roadrunner (stock 383 with stock exhaust manifolds). Need to replace the gaskets and found out that the factory installed studs instead of bolts. Current I have bolts, so have ordered a stud kit and also found out the threaded holes go into the water jackets. So I need to find out what folks use in the way of a sealant when installing the studs?

thanks

I use permatex shellac, Indian Head sealent....let it set 24hrs before starting...

Permatex #2 stays soft and seals great. The stuff is older than me.

Age old (and valid) question which will probably prompt a TON of replies and opinions. The below is my reponse from an old thread about the same question:
"I use Rectorseal tplus2 sealant ( http://www.rectorseal.com/rectorseal-t-plus-2/). I used it due to the info about it: "RectorSeal® T Plus® is a non-hardening thread sealant containing PTFE plus synthetic fibers. These fibers dispersed in a resinous base combined with inert mineral fillers provide maximum sealing performance. Its low coefficient of friction allows tighter joint makeup with lower torque. It also breaks out easily without galling, seizing, or damaging threads. It is excellent for service where immediate pressurization is necessary". So ultimately, it boils down to what people use and have success with. Some use Teflon tape, some use silicone, some probably rub dirt on the threads. Opinions vary and so do results. All I can do is offer my own experience which is- I've had good experience with the Tplus2 pipe sealant. Also it can be had at the local home despot or Ace hardware store and at $4 a tube it won't break the bank.

I use ARP thread sealant with good results.

#2 Permatex for me. I'm sure there are a lot of other options. I try to stay with "tried & true".

I used Ultra Black on the last engine, no problems.

I have used permatex red as well as a the black. Both worked fine.

Remember, you're only sealing threads, so a pea sized amount coating the threads is all you need.

I use napa thread sealer, the old stuff with lead in it, used to come in a 1/2 pint can with a pop off lid, not sure if its still available, prob not safe to eat and bad for the planet but man that stuff will seal up anything with threads and pressure, hot or cold.
If I recall its made or sold for high pressure hydro systems. we have had the same can for years.