Headers and clutch linkage

[Frameshift]

I got a 1971 Chevy C-10, 350, 2 wheel drive, 3 on the tree, 1/2 ton pickup for my 16th birthday. Now, a year later I dropped in a brand new factory GM 350 engine and am looking for headers.

I am going to order the exhaust on-line and want to make sure that the headers will not interfere with the clutch linkage, as most of the headers have the * and say something like-"will not fit standard transmissions without clutch linkage modifications." Modifying the clutch linkage is NOT something I want to get into.

I am looking at Holley Hooker Competition headers part #2452, or Hedman hedders part #69092.

If you have these headers and they fit, or if they don't fit, please let me know.

I am open to any and all suggestions.