Fish Bros Swindon are a dealer specifically on my avoid list for many years since I needed to do business and not finding a helpful response at all. Dealers seem to fail to acknowledge that some people have long memories and once bitten NEVER return. While a discount may be available from a dealer, there jolly well should be as most dealer parts prices are between 4 and 10 times which is scandelous and totally out of line with what the market in general offers.
shop4parts has been consistently the best option for me for the last 12 years. genuine Fiat parts with the hologram packaging and being often 20 to 60% less. In every case they have been able to supply even quite difficult parts at worst at dealer prices but mostly at a HUGE saving
Fiat genuine parts are mostly better than pattern parts, but not always, and the cost is an outrage so look at alternative makes carefully before making a decision. The idea of a dealer helping with old cars is frankly laughable in my personal experience. They are failing for my 2019 car and previous experience is that over 5 years old they stuggle and over 10 years old are a waste of time. On 30+ year old cars the suggestion fo help is very amusing.