Hi team
Pirelli have just made a fresh batch of the 175/70R13 Cinturato CN36 which is the best low profile tyre for loads of classic Ford. Specially Escorts
https://www.longstonetyres.co.uk/175-70vr13-pirelli-cinturato-cn36.html
We do have the 155R13 Pirelli Cinturato CA67 that was fitted to the road cars as standard. and yes as a road tyre that proper period carcass of the Cinturato in the 155R13 size makes it the nicest tyre for road use. However if it something a bit more sporting you are looking for then the 175/70R13 CN36 will give you more grip while at the same time handling nicely as well.
On your classic Ford the CN36 will handle muich better than a modern tyre carcass.

How.much.are.these.175/7oR/13?
and
price.on.205/65/13...........or.205/70/13?

BEE VEE
How.much.are.these.175/7oR/13?

 
The prices are on here
https://www.longstonetyres.co.uk/pirelli-collezione/cinturato-cn36.html
it is worth scrolling sown the page and looking at the special offer prices on a set of 4 and a set of 5.
the prices are alos on this page for the 185/70R13 CN36 which should be any day now and the 165R13 CN36 which will be a couple of months  yet
 

BEE VEE
and
price.on.205/65/13.

 
This is not something we do. it would not be any good on a classic Ford. it may give you about the right diameter:
(65% of 205mm = 133.5mm
80% of 155mm = 124mm
80% of 165mm = 132mm
70% of 175mm = 122.5mm
70% of 185mm = 129.5mm)
 
but the carcass structure is totally wrong and built for a car with a very different suspension. It will not handle progressively and it will track on modern roads.
 

BEE VEE
..........or.205/70/13?

oo too tall; this is a very unusual tyre size. i think it only fits the rear of an Alpine A310 for a couple of years, so the batch sizes are incredibly small making it a pretty unviable tyre. This is the only one i do.
 
205/70 R 13 Michelin XDX - 205/70 x 13 Tyres (longstonetyres.co.uk)
 
However anyway it is about an in too tall in diameter.
(70% of 205mm = 143.5mm)