I'd be interested to know RWKW and torque. My last run was around 122kw at the wheels. I think with the new heads I could add 16 - 18kw on top of that, maybe more. It certainly pulls harder than it did before.
I'm just undecided whether I chance it and pull the manifold off myself and plonk in some Delphi US lifters and hope the slight rattle when hot and the cold lifter tic goes away. I have a spare engine I can have built but the cost of fitment and engine building makes it hard to justify. I'd just love to know what is causing the annoying noises on my engine and then I'd know a bit more about what I should do. As it is if my engine noises are merely lifters and not a spun cam bearing, I'd fix it myself and figure out a way to get some boost. But if this old engine has major problems then I'm best to pull the heads and use it as a boat anchor, and sell the 1.9s and fit a stage 2 cam on another engine that I can have built. But again big money when you don't do much yourself.