Borgeson steering
Yes I had the same problems with my Borgeson/ D453 header combo. I had to beat the snot out of the header to dimple it enough to get both in with some clearance. The headers also hit the drivers side Torsion bar (.96 dia) and the passenger Tbar as well. Such a frustrating install to be honest. The Borgeson stuff I got from Bergman. Peter is a great guy and helped me quite a bit.