Quarter Panel to Trunk Floor Extension

[nicka]

Do I trim the excess off the trunk floor extension? These are both new panels on a 71 Barracuda.

[RUNCHARGER]

I would, just inside the quarter edge.

[7E-Bodies]

If that's an AMD quarter, I had the same issue on both sides and I'm talking an inch short. Really pissed me off. Being fairly efficient at adding/stitching in material, I made a precise stencil out of poster board material and cut an exact piece of identical gauge material, shaped it, and welded it on, then grinded the weld down to invisible. I just didn't want to cut that much off of the trunk floor extension.

[jimynick]

If the outer 1/4 and extension are fully engaged and clamped tight, then what ever's sticking out is superfluous. Use an awl or whatever and scribe the edge, cut it off, drill the 1/4 for spot welds and put it together. This is all predicated upon having a good fit in all the other areas, of course. 

[nicka]

Decided to order wheel lip mouldings and will check fitment.

[soundcontrol]

Mine was good in that area, also AMD parts, Challenger 70, I glued the whole wheel opening and the lower connection the trunk extension, and welded the quarter in other places. Had other fitment issues with it though, had to cut a chunk out of the trunk extension to make it fit vertically.

[jimynick]

Jesus!! You might have my vicegrip collection overwhelmed! LOL 

[CudaA39]

I'm going through a quarter panel swap for my 71 now.  My problem was the opposite, the lower quarter patch for the driver side was way off where the valence seam was.  Had to move it myself.  Then on the inner fender, the patch hung way over the extension.  To answer your question, I'd just grind the quarter back slightly.  If you're using wheel arc trim, it may hide it though.  Good luck!