Planning for a new project next year. M body Diplomat with a 575 HP 440. Will be tying frame together with a 12 pt cage. Just don't know what to do with the factory ISO front suspension. Not interested in an Alterkation swap. I've rebuilt the front end with poly everything and had it properly aligned. Its floating at 120 mph. Coil over and R&P over the factory K? Any solutions? Street/strip.