We're going back in time here a bit too, to when we first completed our fastback conversion (see the June, July, and August '09 issues for those stories). During our metal work, we had the Superide crossmember and reinforcing plates installed, so we'll just briefly recap here. The front framerails need to be in sound shape (we replaced ours) before proceeding. Using the Heidts instructions, the outer framerail wall was trimmed with a plasma cutter to accept the reinforcing plates, which were fully MIG-welded to the bare frames. On a more complete car, you'll have to trim the shock towers away and clean the surrounding metal for welding.