An update. I loaned the Peril to a friend temporarily without a car, which is why it didn't come to the meet. Discussing the state of the gearbox with Stu (mine is a Mk1 apparently which has more issues) I decided that as I wanted to replace the suspension, lower and re-wheel and bodykit it, the best thing to do was to move on the Peril and hunt for a later car with a Mk3 box. I doubted my auto would ever get any better after ATF changes and a new engine mount, so rather than sink any more money in, I should move her on.
Fast forward a week, my friend, who runs the classic car restorers that have done my Merc, made me an offer on the Peril which was fair, so we have shaken hands and he will use it for the winter rather than his old E30 BMW (that makes sense - his wheel arches rust faster than the rear oversteers...). So as of Friday I am coupe less. Currently I don't see any later box models for sale so I'll bide my time. Annoyingly, some odious toe-rag has crashed into the side of my Volvo when it was parked on the street one day and left no details. The bill (I won't go through my insurer, 23 years of no-claims down the drain if I do, expensive on my fleet) is likely to be pretty much what I got for the Peril.
Anyway I won't be off, but will be looking probably in the new year when I have got a couple of my other cars moved on. I want to sell three more (my SM, my BMW M535i and my Mercedes e300 W124 diesel estate). This hopefully will mean I don't have to move at least one car off the drive each time I get my non-daily runaround out!