Derek, I have enormous respect for you and for what you have achieved with the Datsunworks head. Precisely because I value your engineering work, I was disappointed by the way you characterised both the Escort conversion and our solution. Your TL70 conversion is clearly a thoughtful and practical approach. Retaining the factory cover as a reference, avoiding unnecessary work inside the transmission, and using a platform-style shifter are all valid engineering choices. However, they are not the only valid engineering choices. Welding a bellhousing to an existing case is not automatically “asking for trouble.” The quality of the result depends on the complete process: fixturing, heat control, welding sequence, material knowledge, stress management, and final inspection or machining. Shiobara-san and Escort have extensive experience, and their parts have been used successfully by many customers. A different manufacturing method should not be dismissed simply because the details of that process are not publicly known. The same principle applies to Sagami-san’s purpose-designed casting. Accuracy depends on controlling the critical interfaces, including shaft alignment, bearing positions, transmission angle, and the connections to the engine and gearbox. These can be built into the design, precisely machined, and independently verified. The result is determined by sound engineering, machining, and inspection. From our perspective, Sagami-san’s solution is the best solution for our intended applications, which is precisely why we chose it. That is not a theoretical judgement or a dismissal of other approaches. It is a considered engineering and commercial decision based on the complete design, its integration with the L-series platform, its construction, and our confidence in the person responsible for producing it. I have followed Nozomu Sagami’s work for many years. His knowledge and track record, including work connected with Honda Racing, Nismo, Toyota, and others, deserve serious consideration. So before we partnered we took our time to asses. The specific characteristics of the NISMO six-speed transmission, particularly its strength and gear ratios, are also very important to us. We are considering offering the Datsunworks head as a possible option for our S30-ONE cars, and we therefore need a transmission solution that can reliably complement the performance and power potential of such an engine. For that intended application, the capabilities and gearing of the NISMO six-speed are significant factors in our decision. So I am considering having Sagami-san build an engine for us using a Datsunworks head, and I am currently discussing that project with him. I would not be considering this combination if I did not have confidence in both your work and his. In fact, we are currently advising on a project in Australia in which JHH in Brisbane is preparing an L-series engine fitted with a DOHC head supplied by you. That engine will be connected to its transmission using a solution supplied by us and manufactured for us by Sagami san. This is a very tangible example of how our respective work can complement each other rather than compete. Every solution involves different compromises in manufacturing, installation, shifter placement, availability, cost, and intended application. Your approach may be the best choice for some customers; Escort’s approach may suit others. For our requirements, we believe Sagami-san’s solution is the best choice. There does not need to be one universal winner for every vehicle, customer, or application. Thanks Chris