87 Firebird

I have finally decided to drop a performance cam into my 2.8 bird. Whilst searching for the aforementioned cam on the GM Performance page, I cam upon this page, with a list of cams that fit the 60 degree v6.

https://www.spoperformanceparts.com/store/catalog/Category.jhtml?CATID=231

Could someone tell me which of the shaft would be the best bet to put in? Here's the prices, in Canadian funds:

12364059-----208.75
12363220-----181.75
14031378-----381.50
24505674-----372.00

Thanks for any help

Also, could someone who has done the swap themselves please email me @ kharlow@mts.net I have a few quick questions for them. Thanks

87 Firebird

Come on, I KNOW you guys can do better than this!