4 Link/Back Half

I've gotten to the point that the Mopar SS springs have about reached there limit so I'm going to back half and 4 link the Dart this winter. I have talked to Alston Chassis and also S&W Racecars. So far I'm leaning torwards a 26" frame rail width S&W kit but was interested to hear what experience you guys have with any other chassis places.
I have a ladder bar backhalf frame I want to sell. Send me a PM if interested
Tom