JW:
(1) From a standpoint of size, - yes. From a standpoint of economics, - no (prized collector item, unique rebuilding kits).
(2) Short answer - 520
(2a) Longer answer (A) 520 (late smog), (B) 700 (earlier smog), (C) 800, (D) 850, (E) 1000
When looking at "replacement" units, unless one is independently wealthy, one should consider not only size, but market value, and replacement parts. The Rochester 4-G is very much in demand for those restoring, or racing, the 215. Result: higher than anticipated prices. One should also consider replacement parts (the accelerator pump in the 4-GC used on the 215 is unique, so the local FLAPS rebuilding kit isn't going to fit).
78Buckshot - the primary bores and the secondary bores are not always exactly equal (1 9/16 primary, 1 11/16 secondary is common) (1 7/16 primary, 1 9/16 secondary less common but exists).
Jon
