If it's a standard rep Ti case then you're going to need a DSN crown tube as the standard rep is way too small.. or, you can have the tube drilled out to match...
In discussing it with vac, he basically said he hadn't done it yet and didn't know what the cost would be to do it on a DSN 176 (same case as 177) but that it would be $65 to start and go from there...
I would discuss with ziggy as he has done it... both on autos and handwounds....