If memory serves, the older Monogram 1/24th 1957 Corvette kit has the fuelie unit and gives the option of building the dual quad 283. AMT's '63 Corvette coupe kit also has the fuelie, but it may not be the correct unit for a '60. The '60 units were smooth top. Here's a '59:
60 units would be similar except for the fins on the plenum. Here's a link to early Corvette FI units: http://www.corvettemagazine.com/2000/february/fuelinjection2/fip1.asp