as stated in an earlier post, the correct oil pan thread is M12 x 1.5 (F139 model).
The one you bought is the wrong thread pitch. Mycarworx.com has the wrong info
Not the OP, but there is more than one spoiler vendor on eBay with varying results on what you get. At least you scan see exactly what you are getting.
Found some free time and installed the AWE exhaust. Much deeper than my phone can capture. Definitely barks when the stock exhaust only growls.
AWE resonated with AA catted DP
Stock exhaust with AA catted DP
15/15 or 15/18 (see below on Swift) for a slightly more aggressive stance.
Also recommend getting the ZL1 rock guards with any spacers to save your paint
BMS, H&R or Future Classic are reputable brands
if you have a 21, you can buy another m10x1.5 40mm flange bolt.
If you have a 20, you can thread that hole and use the bolt mentioned above. If you are in so cal, I can lend you the tap.
There are 2 nubs on either side of the trunk opening that you can screw further out so that it props open the trunk lid a tiny bit more which should solve the re-latching issue.
Just added Fiamm freeway blaster low tone horn (72112) and now it sounds like a real car. I kept the stock high tone and just tapped into the red/gray wire for the positive so I have both low/high tone.
$15 FIAMM 72112 Freeway Blaster LOW Note Horn...