I am in the process of rebuilding a motor after throwing a rod on my old motor.
I found some good Edelbrock heads for my new motor, but now I am in the market for some round port exhaust manifolds.

Does anyone know where these can be found? (anywhere except the $3,000 ones on eBay.)

I have tried all of the usual places to find parts, and although they are listed on websites such as OPG, or Classic Industries, they are not in stock, and nobody has any idea when they WILL be back in stock.

I would prefer the RA4 style, as they seem to be the easiest ones to deal with, but I may have to go for headers instead.

The car is a 70 convertible with the 455 and auto.

any help would be greatly appreciated.