I have been thinking about upgrading the throttle body on my custom intake manifold. I am on the fence as to which one to go with. I would like to use at least a 75mm t/b. I found 2 that I think would work pretty well. One is a universal 80mm ebay unit. http://cgi.ebay.com/ebaymotors/80mm-...Q5fAccessories
The other is a ls1 throttle body with a 94mm inlet and a 75mm plate. http://cgi.ebay.com/ebaymotors/NEW-G...ts_Accessories

I was wanting to know if anyone has used either and what issues that they have had i.e. plate sticking or fitment issues.

 

Both sites that you posted are not working. What is your setup? Why not go with a blox unit or something of the sort? Really isnt too much difference between throttle bodies besides the size. They all do the same thing. Open and close as to control air flow to the engine. I would start by researching which size will work best with your setup and go from there. Its hard to help when no info about your setup is presented to us.