Great questions. That looks like a sweet set-up it's going to look great when complete. From looking at your pics provided of your fender setup it looks like the tank machine part would work.
My ordering process with Tank Machine is a long-a** story. In summary, Tank Machine offers the PayPal option as a result from my order. Originally, I made the order through the website (use search engine Google for it's translating feature) and used my bank credentials to complete order. The order was received by Tank, however, my personal bank flagged the transaction as suspicious and denied order. I contacted my bank, cleared the issue and cleared for future transactions. I contacted Tank through email and explained the mix-up caused by bank regulations. Tank instructed me to reorder for a new order ticket to be processed. I reordered, but again funds were not approved and were flagged by the bank. I contacted bank and Tank a second time. I chose to use another bank but again had issues transferring the funds and completing the transaction to Tank Machine. Through email, Tank Machine wanted me to wire the money directly from my bank to the Tank bank. Of course, my bank would not authorize the transaction. The situation was caused by two issues. One, the banks I chose to use suck, and Two, Tank Machine website had a fault within the design layout (or something supposedly). Here's where it gets awesome. A member of Tank Machine named "William" called me directly from Paris, France to discuss my order and what we could do to get it done. Now Yes! They want their money, but I saw this as Tank putting in the extra effort and going the extra mile. The gentleman I spoke with "William" called me 2 separate days to discuss the order and spoke English extremely well even for a poor listener as myself. In the end, Tank contacted me and said that they would start offering PayPal for online transactions. Within a day PayPal was offered on the website. I ordered again and received all my goodies roughly 7-10 days later. Awesome service, products arrived protected and perfect condition. All parts and components and instructions were delivered (except directions in French). Products themselves are quality machined. The only complaint is that I assumed that the rear quarter-fender I was ordering was made of metal, not the composite/plastic piece received.
Not sure on what is being asked from Tank concerning your order. $227 (199 Euro) is not a bad price, but it's not a great price either.
Ordered this part today . Used Paypal to avoid any hassles . Hopefully it will work on my 9" fender with out any modifications
Pince fixation Garde boue arrière Tank Machine - Tankmachine