340 t/a heads

I have a set of ta heads ported by Diamond engineering out of Detroit Mi. Can anyone tell me what these would be worth.

Pretty hard to evaluate heads by looking at pics on the net.
Even harder without any pics.

Step one if you’re serious about putting a value on them is having them cleaned and magnafluxed.

The porting only adds value to them for some potential buyers…….. but they wouldn’t be worth what a set of really clean untouched ones are.

The well used ported variety can end up costing a lot of $$$ to bring back into prime condition.