Anyone Using a Bloomer Rotating assembly

Just planning out another Build as you will see from My other post,

Was going to go Scat crank 4 inch stroke and H Beam Rods

Then a Mate Told me about Bloomer Cranks , see they do heads also

Just want to know if anyone is using the 4.125 Stroke rotating assembly and is it an easy fit as regards to clearance etc ,

thanx in advance