Quick question dudes, does anyone know if fitting a yzf750 engine is possible in a 4dx frame. Obviously I'll need carbs etc but do we know if it's possible. Thanks, Richard

Anything is possible but its not practical. The engine mounts are different, the gearbox is the wrong shape and size ... the carbs are too wide for the frame etc.

Use a 600 engine, either the FZR Foxeye or ThunderCat.

I've seen it done, lots of welding required though.
The blade engine fits snug

Depending on how different the 3TJ frame is compared to the 1WG Genesis; it fits very nicely, thank you.

Access to an ally welder and cut/shut skills will be required.