Semi slant head for my YAQI handle

Good morning. I have a YAQI short heavy handle with a scalloped closed comb. I was interested in the new parker semi slant but don't want to buy the entire razor (I have already two razors, the yaqi and the Wilkinson TTO). I don't know how to buy only the semi slant head. Some told me parker heads are sold on maggard site but I could just see a generic "maggard slant razor head".
https://www.maggardrazors.com/product/ma...ead-chrome
Please help.

I think the only slant head you can buy as a stand alone is Maggard’s.