I did a search on TB and found a few problems with the BBK sticking/ high idles once warmed up. Has anyone had this problem with the Holly 58mm? Would there be any other brand recommendations?

 

I don't know about the holley, but I fixed my BBK.

http://www.speeddensity.org/modules....iewtopic&t=100

 

On my Holley 58MM TB I found that the TPS spring return tab was rubbing against the throttle body. I just ground a little off the TPS tab. Works fine. Allen

 

I have a 58mm BBK and used to have a problem with idle sticking. It turned out to actually be the pulleys in the traction control sticking. WD40 took care of it. I think you will be fine with a 58mm. You WILL need to be tuned for the TB