When you go to reassemble engine to trans, take the convertor off the engine flex plate and install it on trans shaft. Before you remove convertor though, mark one flex plate bolt lug to matching nut area on convertor since the bolt pattern is odd spacing. Be sure the convertor is turned and lightly pushed until it seats all way onto shaft. Face of convertor should be about 1/2 inch in from face of bellhousing. Since everything is out probably simpler to install engine & trans as unit.