I once fitted a set of proper flat slides to a dolomite sprint, the high rpm response was mega, also made more upper mid and peak power, which I guess is down to the shorter inlet. At one point I thought about doing the same for my 240z, I'd like to see how they compare to triples on a like for like engine.
Many thanks for today mainy and family, really enjoyed the chat and cup of tea. Very envious of your cars and workshop, a credit to the obvious time and effort that has gone into them.