?? About which style Ram Horns on a 86 C20

[1970pelle]

Hello. Wanting to get started on my new 86 C20. I would Like to open it up to breath. And have been reading and reading, considering past experiences with headers. I would like to try a set of Ram Horn exhaust manifolds. My questions is which style manifold should I get. The style that has a slight turn in it, that would take it from dumping straight down. Or the straight down style ??

I know I have two options of manifolds 2 inch and 2 1/2.

Also is there a set of Ram Horns out there that fit my 1986 5.7L cyl. Heads. With the larger bolt pattern on the front exhaust port left side(driver side) and rear exhaust port right side(passenger side).

Thanks Ken