Can someone help with TTI headers and a 360 ?

If you have a 90* filter adapter remove it and toss it... Use the standard plate system as the 90* is not required with tti headers. Possibility of leaks go WAY down when you can the 90* adapter.

PSSSTTT, the adapter is on pointing the wrong direction. Filter should point at ~8 o'clock if looking at it from side.

You may be able to get away with taking the drivers side motor mount bracket bolt out and swing the K away and work the headers in. Pass side should go in easily with the filter out of the way. I'd do the pass side first, then drivers because of potential pinch points.