Sounds like it & possibly exhaust leak too (could be video)
There should be a cover to take off for gaining access to bolts connecting flex plate to torque converter.
I haven’t removed mine yet; but I can download some information from work on removal process. After bolts are removed from flex plate to converter ~ push converter towards transmission (the way I’ve done them all to avoid mess). Driveshaft removal is basic; remove (4) bolts w/nuts from pinion shaft flange & it slides out of trans.
You’d probably want to drain before removal; (19mm) hex plug near rear of pan & fill plug is the (5mm) allen near the front.
Also; Fast Intentions sells a Billet Aluminum flex plate for these - contact Kevin or Tony & they may give you some tips on removal.
I’ll see what I can dig up from work; but shouldn’t be too tough...
