A couple things to check:

1.) When my kit was delivered FFR had an issue in their system and failed to include the Energy Suspension rear transmission mount. A couple emails and they sent it.
2.) The FFR order system decided a LS/TKX/IRS configuration required driveshaft #16038, which is way too short. The correct driveshaft is #60175. Once again, FFR made right after an email.

Enjoy the build!