Not sure if they are or not to be honest, just get AA, RAC or cover through your insurance for about £100 a year MAX normally, then no probs if you break down, owning cars like this from my experience its needed to be honest, even the smallest of things gonig wrong used to mean me getting recovered so I could get it home and fix it immediatly.
This is a ain reason I sold up, got the R33 GTR which I hated, the EVO6 which was no better and then went to the Honda DC2 which was perfect.
Managed a day around brands and nothing went wrong and it carried on running for months until I sold it again without missing a beat (hense I will get another) the brakes did not even fade and I drove it harder than I did my Pulsar.