Different types of 4 to 1 headers compared

I am chasing a set of manifolds to fit a cammed LS1 that will go in a C3 1980 Corvette. Not sure exactly what will fit but i know Camaro headers fit.

Is there a thread comparing the sizes and types of manifolds/extractors ?

Here are all the ones i have found...

Best i have read is the VY2 HSV long headers 4 to 1 1 3/4 primary to 3"
But the others, how do they compare as i dont know if i can fit the long headers in..

Below i just uploaded a pic of all types compared. Can anyone with experience fill in the gaps and recommend which is better and the differences or point me towards a thread with the info. Thanks

 

How do these compare to the VY2 Headers? Are they the stock HSV VE ones?

 

Here are all the ones i found.. Anyone know what each are.

1. Stock VE Headers, Log style, 1 5/8" Primary, 2.5" Collector ?
2. HSV VE Headers 4 into 1, 1 5/8" Primary, 2.5" Collector ?
3. ??
4. Ebay Extractors Headers 4 into 1, 1-3/4" Primary, 3" Collector
5. HSV VY2 Long tube Headers 4 into 1, 1-3/4" Primary, 3" Collector ?
6&7 ?
7 -- Same as #6 whoops
8. Ebay Conversion Swap Headers (Camaro, Chevelle, Nova, Firebird) 4 into 1, 1 5/8" Primary Tubes, 2.5" Collector

 

Its left hand drive