In the boating world you'll find vacuum extractor for oil change with various capacities. My $100 pump holds 7-quarts, and the internal float vents the vacuum when the capacity is reached so there'almost no chance of a spill.
The only way to repair thermoplastic is "welding".l repaired a similar accidental injury on my Ford F350 radiator using my Weller soldering gun and a flat "rope cutting tip".I was able to do it without any filler material, but did need to clean the bore after welding. Do an online search:there...