With all the aftermarket parts available these days, it's increasingly tempting to convert your truck to be the most sought-after year of that body style. Think about it, there are probably more "'67" Chevys, "'40" Fords, and "'56" Chevys than there were on the road 20 years ago. And who's gonna blame you for making your classic truck the rarest or at least most sought-after truck possible. You're pretty much guaranteed to get more money for it when you sell it, not to mention feeling like you're investing your money into something worthwhile. One of the most sought-after vehicles in our world is the '56 Ford F-100 Custom Cab. Most agree that the big back window is better looking, and there is no denying that they are harder to come by.

Getting yourself into a big-window Effie just got a little easier thanks to the new big-window conversion available from Goodmark. It is a new metal frame and surrounding sheetmetal, and once all of the spot welds are removed and the cut is made across the bottom of the cab back, the new piece welds in. The cool thing is that the doorframes remain intact, so there is not as much danger with the cab flexing out of whack while welding the new frame in.

World-famous F-100 builder Bobco in Lake Elsinore, California, got their hands on one of the very first of these frames and has since performed about a dozen of these surgeries. Follow along as Marco makes the job look easy and check with Goodmark or Bobco to make your very own Effie a big-window.