I'll have to dig up the Polaroid from 1983 later to post. A working MTB made from a 531 A-D Inter 10 road frame that had been damaged in a Park stand. First step was to confirm that a fat knobby (Stumpjumper 2.125, the originals!) would fit the frame, I spread the rear dropouts waaaay apart and drove a block of wood nearly to the chainstay bridge, then forced the dropouts back together, bending the chainstays enough for tire clearance. Presto! Now for the fork. Bought a 26" BMX cruiser CroMo fork that had a steerer
almost long enough, so I effectively lengthened it by cutting 1/4" off the top and 1/4" off the bottom of the head tube. Again, presto!
When that frame eventually broke across the seat tube just above the BB shell (notice
not where I'd messed with it) I swapped the parts over to a Cimarron frame, and I have some pix of the parts on that bike which is still in use.
My "K-mart triple" crank made from a Fuji-branded Sugino Maxy double that I tripleized by adding a SunTour Perfect 22T cog (smallest with slots in a multiple of five to align with the bolts)
Campy Record hubs from a local advertising paper (Remember those? Ours was the Trading Post); spoke holes had been drilled way oversize so I found 105ga. spokes for the wheel build and drilled the Araya 7x rims for the nipples.
Need a way to carry lunch, right? Warranty Pletscher rack was cracked at the front cross piece so I cut it off and drilled to make it a seatstay mount. Soubitez BB generator (since removed) attached to the seatstay bridge.
That original build with the MX fork needed a stem with .833 quill so I used a 4-bolt BMX item and a yellow motorcycle MX handlebar. It was a fun bike and the parts live on funly.