Raul, there are some things I just have to leave to others. I send the chrome out to be done of course, this bike suffered rust pitting in it's intake valve seats, so a simple valve lapping procedure would not cure it. I had to buy new 4 speed intake valves (they are unique and different from the 68+ 5 speeds) and get a good friend of mine to do a complicated multi-angle valve job with his Serdi machine, he also did the pressing of new cylinder sleeves and the honing. I have a good friend in the powdercoating business so he gets all of that, but I do all of the filling, smoothing, and prep work. All dents and scratches are filled-in using JB Weld (it conducts electricity and takes powder perfectly). This tank took me several evenings to get perfectly smoothed and dent/scratch free using nothing but JB Weld and a hand/block sander - yes - it's powdercoated as are all of the black pieces on the forks and headlight. The paint work is done by a local rod shop using Dupont Chromabase urethane system - not something I can do at home. I do however take him blasted, cleaned parts only. Now I do 100% of the teardown, the cleaning, the beadblasting, the wiring, the spoking, truing, and 100% of the assembly, tuning, and of course the research and locating of parts (my favorite part of it).
Over the years, I've done about 2 per year. This has been the slowest because of parts availability. The K4 750 was the easiest, but even the 8 Kawasaki triples I've done were easier than this 450. EBay is a great indicator of what you're going to be able to find or not -
Go to CB750 search on Ebay and there are 25 pages of parts. 80% of the little parts are still available for the 750 K4 from Honda and aftermarket stuff is everywhere.
Go to Ebay on the true Bomber stuff and you'll find 4-5 real items. Honda has 10% or less of original parts. You've got to make friends with the vintage dealers. These nos pipes came from a vintage dealer that had told me earlier "we don't have anything like that" and were not on the inventory for anyone to sell. After several months of shipping parts and discussions about the hobby - he calls me and says he's going to sell me the pair that's been in private stock for a personal project. I had just lost an Ebay auction for used ones at the $1,301 that I'd bidded on two weeks earlier - Friends are key and I've met a lot of them in the 10 years I've been doing this.
Here is that head after the Serdi machine performed it's magic to the valve area.
![](http://star.walagata.com/w/ilbikes/2240364.jpg)