Sure, roller cam too. And don't use 50 wt oil! With modern thin low tension rings, it will rev to the moon, and make more horsepower than you ever imagined!
I worked on both these cars. The one in question hasn't run in many years. I wouldn't attempt it without going through it completely. The Turquiose one I recently refreshed the valvetrain.
Usually it is the mechanical sweep sticking on the ring magnet inside the tach. You will have to center the magnet, and set it with superglue.
Usually they hit around 2500 RPM.
A 67 would be the same as Studebaker versions. The outer rubber is replaceable and slides into the stainless channel. Available from SI. No need to reinvent the wheel.
If you're going to the expense of upgrading to forged pistons, do yourself a favor and upgrade to a modern ring package so you can use thinner low friction rings and/or zero gap 2nd rings.
False. For some reason Avantis used a T-86 threes speed rather than the T-85. The T85 is what became the T-10 with the reverse moved into the tail housing.