ohh you brought this one, well to handle such thing you need to be part of it, first heat issue, take off the seats, and take off your carpet, now start looking closely near the bay, you migh found a hole over there with missing boot, replace it and drove it as it is, n notice from where the heat is coming, check any exhaust leaks, and gear oil, cz gear cause heat if oil is not replaced on time,
how in the world you broke the COILOVER? they made to face hard time on track, well disassemble n post here what actually you broke, might be those are fixable.