Heidt's drop spindle and A-arms

[Dads502]

Does anyone have experience in using the Heidt's 2" drop spindle and their tubular A-arms on a 69 Camaro? I'm using a stock subframe and most A-arm manufacturers require modification to the subframe, but Heidt's claims theirs is an easy bolt on. On the drop spindle, I am currently using Hotchkis 2" lowering springs in the front with stock height spindles. If I go with the 2" drop spindles, will the front end drop even lower than it current is, or will it just change the geometry of the front suspension components?