OK. I'll try to answer this one. From largest to smallest.

FIRST GROUP LARGEST
Suriname
Venezuelan
Guyanan
Peruvian

SECOND GROUP MEDIUM
Colombian
Argentine
Long-tailed - Peruvian
Short-tailed - Bolivian
Mexican
Panamanian
Hog Island
Honduran

THIRD GROUP SMALLEST
Costa Rican
Nicaraguan
El Salvador
Corn Island
Sonoran
Crawl Cay
Caulker's Cay

While it's impossible to get precise ranking. I'm just guessing off the top of my head. Opinions vary. I'm no authority.
Most boas on the market are captive bred hybrids and variant morphs that may grow larger than their wild counterpart, so it's all up for debate. I'd say most boas on the market fit somewhere in the middle group, as Colombian Bci is usually the base cornerstone lineage. In that, overall length would be about seven or eight feet total.

I did not list everything. Just what came to mind.

I suggest you read Russo's book "The Complete Boa Constrictor".
He gives the latest and most comprehensive treatise on the subject.

jsc



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"As hard as I've tried, just can't NOT do this"
John Crickmer

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• Boa locale differences? - ADWE, Wed Dec 5 10:13:50 2007
• RE: Boa locale differences? - TnK, Wed Dec 5 16:23:08 2007
• RE: Boa locale differences? - jscrick, Wed Dec 5 16:27:37 2007
• RE: Boa locale differences? - TnK, Wed Dec 5 19:32:44 2007
• RE: Boa locale differences? - jscrick, Wed Dec 5 21:05:21 2007
• RE: Boa locale differences? - Ophidia_Junkie, Fri Dec 7 06:06:30 2007
• RE: Boa locale differences? - Odin22, Fri Dec 7 06:35:56 2007