Hi davg1023
I know where you are coming from. Having driven LA to San Francisco (about a 400 mile trip on Route 101) on my own in a day, the engine note can become quite wearing - and I don't have overdrive - 3000rpm @ 60 Mph, and at the time, insane rattle from the valve gear. Cruising at speed is not really what these cars were designed for, but they will do it all day if the driver is up to it... However, on a slower twisty country road, the low gearing is more in it's stride.
I understand the "Ford type 9" 5 speed conversions make driving a pleasure (though I wanted to keep my car original). I don't know it they have an overdrive or direct top gear though. There is plenty of info out on the internets.
From what I have read the Weber carbs need careful attention to setup to get the best out of them. Contrary to popular belief, a well maintainted set of SU carbs is easy to adjust and offers good performance. Even a complete rebuild is not hard - but then again I'm English, so perhaps it's genetic ;-)
Cheers
Ed
I want my MGB