The only bad thing about the DUI is that I dont think you can run the dist with the coil in it when you have a small block in an a body. I think there's a problem with firewall clearance.
This is correct. The cap/coil combo is too large for A body small blocks. They do have a stock size cap and HEI unit that uses an external mounted coil. No need to mount a control unit as it is attached to the distributor. Like several other suppliers they will custom the advance to your engine specs before shipping.
