In response to the dizzy issue on the early 265, the issue is not only the dizzy, but the cam also. The early 265 ('55-'56) has a slightly different oiling system than the '57 and later smallblocks. the oiling for the lifter gallerys is provider by a groove in the rear cam journal. If you use a later cam without the groove, it will starve the lifters and upper end for oil. Strangely enough, GM repeated the same problem with the '65-'66 396 big block.
I'd also like to add, and red58 covered this in anothe thread, the Cameos were not just made in one plant,they were made in all of the plants according to orders received. I'm inclined to think that that myth got started because up to '56, Corvettes were all amde in Flint. Being that they were the only other 'glass bodied vehicle, I can see where one could make that connection. I'd also like to add that I've never seen a legitamate Cameo with the small window or without the crome grill, bumpers, and window trim. There's also a few other bits that were standar equipment on the Cameo, like the right hand visor and door armrests. Other items, like the truck Fred speaks of, were optional. Most Cameos I've seen were well optioned.
