Yep,what Streets said.
That NTBA web site is a great place to start,if it is purely T buckets,they have a great technical BBS.With Bucket design there is only one rule.There are no rules.As long as the rod is SAFE there really is no set down black and white blueprint to follow,apart from the suspension setups,re camber/castor and making sure all chassis work is safe legal and plumb of course.What parts you use are entirely up to you,if they fit and do the job go right ahead and use them.We have been using that philosophy down here(NZ) for years.Thats what makes building a rod,especially a Bucket so satisfying,although we can use current cars as a starting place and even take ideas from other rods or builders,the end result is yours and originally yours,one of a kind.Thats rodding!
Good luck.Hope to see some photo's on THIS site soon.

Cheers KIWI