I would recommend that you dont do that....make a trip to the parts dept at the dealer and ask if the hardware for the V6 will work with the GT sway bar....hopefully it will and reuse the hardware you have from the V6.... use the locktite and torque to spec! done!

The only problem is that I don't have any of the bolts for the rear.

take the time to make the trip to the dealer for the bolts!

Yeah, that is probably the right way to go. Thanks!

So is it a "Have to" to use loctite on the rear sway bar?

No. I reused my rear swaybar bolts when I put in the Steeda bar and torqued them to spec about 3-4 months ago. I checked them last week when I was under the car and they were still torqued to spec.

No you don't and as a matter of fact if you want to see if the one time fasteners will hold again without it (at the recommended ft/lbs) I say see what happens. After a few miles jack thee car back up and check to see if they are still torqued to the proper amt and if they are great if not I would get new fasteners and know that it is correct and the way the factory recommends!

So on the subject of bolts. Are factory replacements the only way to go when installing the sways?

if your looking to use something other then the ones you have now?...then yes!