When I was running Brits forty years ago, the first oil-in-frame Triumphs, you couldn't give them away. The late '73 and '74 Triumph 750 twins were the best. Meriden changed the rear frame geometry a bit and got the seat height down to where it should be, 750cc motor, 5 speed, front disc, and the shifter was on the proper side... My '74 Bonneville was second favorite next to my '69.
That's a pretty nice example of that model. The hopped up motor is a two edged sword. The stock motors didn't live all that long without a major overhaul and if you hopped them up, their lives were even shorter.
Larry