Haha! Im working on my xsr700. Cracked oil pan so the exhaust has to come off. Its a 2016 bike and bith the bolts and the studs are rusted to shit! Ill have to lookin to getting that impact stud remover!
I would just wind the new studs in by hand, with a little bit of copper grease on the threads. I am in the process of making a video of fitting the exhaust - I decided to get some titanium exhaust studs in the hopes that I don't need to ever deal with rusty studs again! I'm glad it was helpful for you!