A 1.14 might work OK but I can't believe it's actually new, reman maybe.
The Offy 4 barrel manifold was a bolt on , I had to make a throttle cable bracket, used a 390 Holley, and it worked great. The heads were planed .030, I used the middle of 3 cams that Comp offered but can't remember the specs, ported the heads and used some 1 1/2" headers that we bought from Joe Rodriguez in Washington or Oregon- he sells headers and mount brackets for 2.8 swapped Sunbeam Alpines. I used a the T5 out of my daughter's wrecked 89 Mustang and an 8" rear in a real narrow Currie housing. The car weighed less than 2000 lbs after swapping in the Ford running gear and was a little rocket, if you took off gently in low and rolled into the throttle the secondaries would snap open at 4000 and pin the tach. The people who thing Pinots are fire bombs would be horrified by the Alpine, there was a 7 gallon gas tank in each rear fender protected from rear impact by the tail light lenses and a 2" tube running between them just forward of the thin, flimsy rear bumper. There was a canvas curtain at the front of the trunk between the gas tanks and passenger compartment. It was a fun car to drive but I couldn't sit at a stop sign without watching for trucks in the rear mirror.