OK, so how many damn thermostat housings are there?

[schnitzer teil-jäger]

I grabbed two different ones to sandblast and clean up for the engine but LOL LOL needless to say they were not the correct ones.

there are at least the following:
2 sensor offset sensors,
2 sensor inline sensors smooth water outlets,
2 sensor inline sensors ribbed water outlets,
4 sensor offset sensors smooth water outlets,
4 sensor offset sensors ribbed water outlets,
4 sensor inline sensors,

and the offset ones do not fit with the "i" fuel rail.

w

[rs4pro3]

the four and two sensor ones with same ribbing pattern are the same there just is a bolt where the lower two sensor go instead of a sensor. You'd think they were all the same but there not.