Few and far between, nobody currently makes a manufactures a diecast Escort RS Turbo model.
Solido made one 1/43 scale but it has long been discontinued, your best bet is to check out the French Ebay site and one may turn up.
There is also an Italian 1/43 kit but that also has been discontinued
K&R replicas make a metal kit of both the series 1 & 2 for around £35 but the standard of their kits are somewhat crude.
The only motorsport model I have is a very poor model of 1982 Rally of Elba which is not yet featured on my website.