That sure is one fine looking bike 736. I started wondering about this after feeling drained about having to repair, rebuild, replace, etc. almost every part of my project bike. But after looking at your creation I realize it would be a gigantic task to research and source the complete bike.
How long it took you (I won't ask how much)?
Took about 3 years. It started with a totally bare-bones bare early sandcast frame found in a Pennsylvania junkyard. There wasn't 1 part on it, not even a single #8 bolt. This was around the time I was beginning to restore 2 other sandcasts, so now I had 3 to play with, and envisioned how neat it would be to line-up 1 of each color. I was definately on a mission: a NEW CB750 candy blue-green sandcast, a 100% correct original candy ruby red sandcast, and a 1-of-a-kind candy gold sandcast (just like the pre-production CB750). Each would be correct AND factory Honda original paint.
I asked around looking for a matching # sandcast motor for the bare frame and luckily sourced a bare set of cases in Minnesota at M3 Racing. Incredibly, the #'s were within 100!. I commissioned Mark McGrew to build an entire correct motor and met him a year later at Mid-Ohio VMD where I picked-up the completed motor. All this time, I was gathering parts from all over the world; a nos 8 piece set of bodywork from Canada, a super-rare nos ducktail seat from Florida, HM300's from CMS Netherlands, gauges from Japan, and most of the rest on ebay and, of course, from Honda. There was much chrome and zinc-plating of fenders, nuts and bolts, etc. I wanted ONLY new parts so some details weren't absolutely correct (stamped HM300 pipes, non-wrinkle tank, 3 hole rear fender etc). I DID rechrome a double-cut front fender and correct early rims, and lathed a smooth oil filter housing.
It all came together in Spring 2004. All 3 bikes were done, and the candy gold sandcast took 1st Place at Mid-Ohio VMD 2004. The toughest part of all was starting the blue-green sandcast; it was soooo new, I was chicken to add gas and oil and get dirty carbon in the new pipes! Eventualy I did, the day it was traded.
I put close to 10,000 miles on the gold bike during the past 3 years and was my daily rider (until a certain Yoshimura cafe-racer caught my attention this Spring), so they're not all trailer-queens!