Blown torque converter

I bought a 1992 SVX before Christmas 2001 and wound up placing it in a Subaru repair facility in New York City where over a period of 5 weeks abt $9000 in work was done, including purchase and installation of new L&R struts, radiator, rear bearings, flywheeel, front brake pads, auxiliary trns oil cooler, wheel rims, etc. A rebuilt tranny was installed in July 2001.

I usedthe car for abt 5 days after all this work and lost all my tranny oil at 75mph last weekend. Hopefully I got the car over to the breakdown lane before the tranny got fried.

I got the Svx towed to the same repair facility and was told that I had blown the torque converter gasket. The plan is to install a new gasket, put new tranny oil in and road test the car to see if the tranny is damaged. For what it is worth, I first noticed the problem when I spotted billowing white smoke coming from the car--tranny oil hitting hot exhust--or tranny oil burning up?

My question is whether the install of the new flywheel was done poorly and caused the blown gasket.

Any comments on what happened would be appreciated.