Hi there - has anybody had any experience with Kelford 176-B cams?

Was looking for a set of cams to buy, and Kelford has really appealed to me. For stage 1 cams these appear to be extremely aggressive and appear to be do-able on stock internals.

They seem really underrated and have hardly been able to find a review though. Has anybody got any information on these or use them? Info is scarce.

Running a jdm itr b18c, are these safe to run on stock internals/compression? Or am I going to need to do some head work? Will be using recommended titanium springs and titanium retainers.