I just rode my very ported DR.
Fucking love it.
Was good stock, so much better ported wide above the semibridge.
I think I got my exhsust abound 22.5mm from the top.
Still jumps onto the pipe even with race gears really quickly.
Used it on pinball, well it melted the piston on the 5th day,
But just sanded the other day and got a new piston and it's even faster than it was before.