I just replaced the tires on my 2000 convert, and on my wife's '67 convert..
The ones I took off the 2K have about 40% tread left. Have been heat cycled too much for autocross; Still very good for street driving; Still great for road-course racing; or for drag strip and burn-out stuff;
They are BFGoodrich Comp T/A G-Force KD tires.
Fronts 265x35x18
Rears 295x35x18
Brand new these are $1600 (USD)(that's what I just paid for the new ones).
Offering these for $500 (USD) for the set (or reasonable offer).
The ones from the '67 are BFGoodrich Comp T/A ZRs. They have about 25% tread left.
Some street life left; good for drag racing or burn out stuff.
They are 245x50x15.
Brand new they are $600 (USD) (that's what I paid for the new ones).
Offering these for $150 (USD) for the set (or reasonable offer).