250-500cc Would like to eat KTM's for breakfast

Hi there,
My first questions here in this forum.
My WR250 is a 2000 version with an HGS exhaust and Reiger boutique front fork/suspension
I just got it since 6 months after an absence of 20 years in dirt biking.
In terms of handling and stability, I think this bike doesn't feel outdated at all.
The only down side is, that I miss some raw power that you'd get from a 2 stroke motocrosser.
I was wondering if the WR's of those years are pherhaps a bit mild mannered or should they have to go berserk in the first 3 gears when I open throttle?
The only 2 stroke material to compare, is with another WR which I chased for some time during a mud race..that bike didn't rip the grass neither (sort of speak).
On another day I met an older KTM 250 2 stroke in the deep sand, we had about the same acceleration.
The enduro's here in Holland are higher speed flat open terrain, with most of it in deep mud or heavy dune sand..you need some hp for that.
I'm not sure if the piston is still very fresh, the previous owner said 20 hours, but I will do a new top end to be sure.
So how can I uncork this WR on a budget?
Anyone who did some fiddling with the Honda CR250 Reed housing?
Which years would fit?
I could go V-force 3, but it is quite expensive I think, and I heard a lot about chipped reeds with them.

If you want to go fast then throw your budget out the window.Buy a husqvarna cr250 ignition and have the head milled and you'll get the snap you want out of it.

Also if your lucky enough to find one you could fit the cr gearbox it's closer ratio

Get the head modded first, it added instant snap to my 300.
If you don't have enough power after that get a 300 cylinder

Head modding, ignition, cr gearbox...sounds like €
Maybe I should lower my ambitions a bit.
Firstly doing a top end would be good idea probably.
I could also go to a 12 tooth on the front for a start