I started the Mk.5 build at the same time with the plan to build OOB. The plan quickly collapsed ----
While I was building my Twin Fury I was looking for P-51H type wings and as I was building the CF-100 Mk.3 around the same time I notice the outline of the Mk.3 wing looked very familiar. It has the same outline as the P-51H, actually it's more a scaled up F-82 outer wing.
So while laying the P-51H and F-82 wings over the Mk.4 wing, one of them sort of ended up near the wing tip ---- and then I thought "whoa!" that would work for an extended wing. I had an abandoned Beechnut P-51H in the spares box (it's undersized for 1/72, more like 1/75) so after thinning the wings from it to get it down to the CF-100 thickness, I found that the outline kept getting smaller as I thinned the chord thickness. Which worked out for what I wanted to do, because it meant I could move the P-51H wing further out towards the wing tip, making the wing even more extended.
The next part was what to use for a recce nose, and couldn't find what I thought I had in the spares box. But there sitting on my work bench shelf was this recce pannier from a TSR2 conversion. Then an idea started to seed itself into my mind.
To get the pannier to fit under the fuselage meant I had to move the main gear bays further out, which would be very difficult to do because the undercarriage doesn't fit in the wing, they are all under the engine pods and fuselage. So I thought I would just move the engine pods further out, but then had another thought, I'll re-engine it with high bypass turbofans at the same time.
The Mk.5 is a good choice to do an high altitude recce bird, the tail plane is quite a bit wider than the tail planes on the other versions.
Then after I had made my fuselage changes --- I found the recce nose I knew I had. It's from an RF-101C which I've converted back into an F-101A. So I thought 'what the heck! I'll stick that on too'
So these pics show where I'm at with this one.