@tablejockey Yes, it can get a little squirrelly. "Involuntary lane changes" are a phenomena of high power and a short wheelbase. Glad you got to have fun in your friend's Alpine. I put a turbo on my '67 and still drive it. Quarter mile times quicker and faster than a factory stock Tiger.
@acresverde Sounds like you had a "perfectly normal" relationship between a young enthusiast and a sports car to me. I still abuse my turbocharged Alpine. It deserves better than me.
@ghasley Your mechanic is partially correct. The #8 plug is accessed thru a grommet in the driver's side transmission hump. It's actually quite easy to remove/reinstall. #s 2-7, not so much. It rate myself a 6.2 on the "vintage car mechanic scale" and have kept a couple of Tigers running for 20+ years. Sounds like your mechanic needs to stick to working on slant six Plymouth Valiants. Lots of room to work in the engine bay.