I started looking for other options... I've bought a grand sport px piston and I thought instead of welding up the window, I should look at reed valves
Here's where I'm at...




Checking out how a px carb will fit etc



I had a reed water cut to a shape I thought might work, then spent a few hours grinding it to make it fit!

This is about what I've ended up with so far

Test fit

Carb box sits at the same height as if it was on a standard carb


Starting to cut the barrel so the reed will fit in there... I've got a few plans for some porting and port timing but I might dyno it first with as few mods to the barrel as possible to see what it's like