About to drop in my 440. I think 1 7/8" headers are what I need, but wanted some other opinions. The main reason I am thinking about 2" is because my goal at some point is to put a larger engine in the car, and would like to re-use the headers.

But if 2" will end up losing substantial torque/hp from my current engine, I do not want them.

Here's the quick info on my setup. Street/strip. 71b. 440, ported RPM heads, 10.2:1 compression, duration @.050 intake 244 exh 252, LSA 8 degrees, Gross valve lif intake .520 exh .541, 3500 stall.