I ran a Ram Jet intake for 15 years, no problems what-so-ever. Changed the gaskets about every two-three years. Had a Kien butterfly mounted on it first, then a Rev-tech Accelerator I. I change to the S&S intake because it came in the kit, however the carb would fit the Ram Jet.
It is in my 'spare parts' box, I'll hang on to it, than you very much.
When the compliance fittings on my '87 Evo Softtail cracked, I replaced them with the Ramjet manifold. I ran that bike for 70k miles before I sold it and it never gave me any problems. When I tore down my '85 FXST, the first thing I put on my replace list was the rubber manifold. I picked up a Ramjet unit at a swap meet for $10. It's been on there for thousands of miles now with no problems. If you're looking at easily removing one of the Evo's weak spots, this is where I would start.