Broken o-ring in tbi 4.3l 46 gm extreme flooding

Today I pulled out my fuel injectors since one of
them was clogged up. Got that part taken care of,
minus one oring at the injector sprayer. Ran rich,
but fine. Got to auto parts store for oring and was
sold one that thicker, but same diameter. I was told
it would stretch a bit. It did not. It broke the
housing and from that point it began to spray gas
unctrollably. I tried several things to rig it to get me
home. Nothing worked and i ended up flooding the
engine very bad. Not having much luck finding the
fuel meter housing. At this point, im not sure how
to get all that excess liquid gas out of the engine.
Any ideas?