No/yes/sorta.I have some topics some where about the engine build,but not the FI thing.The manifolds is at my fabricators place and i'll be calling him to boot him in the ass in the A.M.
One thing to keep in mind is that the 280 manifold runners are about 31 MM,they are SMALLER than a L-20B manifold( i think they are 35mm).Now,since my motor resides in a daily use/cruiser,the motor was built with priority on low end(port velvocity) grunt.THe cam selected is all done by 5500,which is fine for MY purpose.My torque figures went up 60%.It may not work for you.So,the million dollar question is:Where does the 280 manifold start restricting airflow?